Covert Ops fits (hover for notes):In descending order of usefulness as pure scanners (Anathema/Cheeta are equivalent). Helios can't fit cloak + launcher + nulli so it loses out, sadly. These all need Spaceship Command V to hit the 3-second align breakpoint. Depot + Relic Analyzer for grabbing structure timers. Since the introduction of nullification modules (May 2021) these are better than T3C scanners. Unless you need to blow many bubbles in quick succession, in which case, use Inty > T3C.

Pacifier (best by a considerable margin)

[Pacifier, Holefinder CO Pacifier 3SA] Nanofiber Internal Structure II Nanofiber Internal Structure II Inertial Stabilizers II Limited Hyperspatial Accelerator 5MN Quad LiF Restrained Microwarpdrive Scan Acquisition Array II Scan Pinpointing Array II Scan Rangefinding Array II Covert Ops Cloaking Device II Sisters Core Probe Launcher Interdiction Nullifier I Covert Cynosural Field Generator I Small Gravity Capacitor Upgrade II Small Hyperspatial Velocity Optimizer II Eifyr and Co. 'Rogue' Evasive Maneuvering EM-702 Sisters Core Scanner Probe x16 Mobile Depot x1 Liquid Ozone x175 Relic Analyzer I x1

Anathema

[Anathema, Holefinder CO Anathema 3SA] Inertial Stabilizers II Inertial Stabilizers II Inertial Stabilizers II 5MN Quad LiF Restrained Microwarpdrive Scan Acquisition Array II Scan Pinpointing Array II Scan Rangefinding Array II Covert Ops Cloaking Device II Sisters Core Probe Launcher Interdiction Nullifier I Small Gravity Capacitor Upgrade II Small Low Friction Nozzle Joints I Sisters Core Scanner Probe x16 Mobile Depot x1 Liquid Ozone x200 Covert Cynosural Field Generator I x1 Relic Analyzer I x1

Cheetah

[Cheetah, Holefinder CO Cheetah 3SA] Inertial Stabilizers II Inertial Stabilizers II Inertial Stabilizers II 5MN Y-T8 Compact Microwarpdrive Scan Acquisition Array II Scan Pinpointing Array II Scan Rangefinding Array II Covert Ops Cloaking Device II Sisters Core Probe Launcher Interdiction Nullifier I Small Gravity Capacitor Upgrade II Small Ancillary Current Router I Sisters Core Scanner Probe x16 Mobile Depot x1 Liquid Ozone x225 Covert Cynosural Field Generator I x1 Relic Analyzer I x1

Buzzard

[Buzzard, Holefinder CO Buzzard 4SA] Nanofiber Internal Structure II Micro Auxiliary Power Core I 5MN Quad LiF Restrained Microwarpdrive Scan Acquisition Array II Scan Pinpointing Array II Scan Pinpointing Array II Scan Rangefinding Array II Covert Ops Cloaking Device II Sisters Core Probe Launcher Interdiction Nullifier I Small Gravity Capacitor Upgrade II Small Polycarbon Engine Housing I Sisters Core Scanner Probe x16 Mobile Depot x1 Liquid Ozone x175 Covert Cynosural Field Generator I x1 Relic Analyzer I x1

Scanning Interceptor fits (hover for notes):In descending order of usefulness as pure scanners (Ares/Malediction are equivalent). Depot + refits for grabbing structure timers and (subpar) tackle.

Stiletto

[Stiletto, Holefinder Inty Stiletto] Inertial Stabilizers II Inertial Stabilizers II Inertial Stabilizers II 5MN Y-T8 Compact Microwarpdrive Scan Acquisition Array II Scan Pinpointing Array II Scan Rangefinding Array II Compact Interdiction Nullifier Sisters Core Probe Launcher Prototype Cloaking Device I Small Gravity Capacitor Upgrade II Small Hyperspatial Velocity Optimizer II Sisters Core Scanner Probe x16 Mobile Depot x1 Relic Analyzer I x1 Republic Fleet Small Shield Extender x2 Ship Scanner II x1 Fleeting Compact Stasis Webifier x1 Faint Epsilon Scoped Warp Scrambler x1 Faint Scoped Warp Disruptor x1

Ares

[Ares, Holefinder Inty Ares] Nanofiber Internal Structure II Type-D Restrained Nanofiber Structure Type-D Restrained Nanofiber Structure Type-D Restrained Nanofiber Structure 5MN Quad LiF Restrained Microwarpdrive Scan Pinpointing Array II Scan Rangefinding Array II Interdiction Nullifier I Sisters Core Probe Launcher Prototype Cloaking Device I Small Gravity Capacitor Upgrade II Small Hyperspatial Velocity Optimizer II Sisters Core Scanner Probe x16 Mobile Depot x1 Relic Analyzer I x1 Republic Fleet Medium Shield Extender x1 Ship Scanner II x1 Fleeting Compact Stasis Webifier x1 Warp Disruptor II x1 Warp Scrambler II x1

Malediction

[Malediction, Holefinder Inty Malediction] Nanofiber Internal Structure II Nanofiber Internal Structure II Nanofiber Internal Structure II Inertial Stabilizers II 5MN Quad LiF Restrained Microwarpdrive Scan Pinpointing Array II Scan Rangefinding Array II Interdiction Nullifier I Sisters Core Probe Launcher Prototype Cloaking Device I Small Gravity Capacitor Upgrade II Small Hyperspatial Velocity Optimizer II Sisters Core Scanner Probe x16 Mobile Depot x1 Relic Analyzer I x1 Republic Fleet Medium Shield Extender x1 Ship Scanner II x1 Fleeting Compact Stasis Webifier x1 Warp Disruptor II x1 Warp Scrambler II x1

Some useful/interesting fits:

Cheap 10km/s Punisher w/instawarp refit:

[Punisher, 50mn Speeder Punisher Cheap] Micro Auxiliary Power Core II Micro Auxiliary Power Core II Type-D Restrained Overdrive Injector Overdrive Injector System II Overdrive Injector System II 50MN Y-T8 Compact Microwarpdrive Small Cap Battery II Improved Cloaking Device II [Empty High slot] [Empty High slot] [Empty High slot] Small Dynamic Fuel Valve II Small Ancillary Current Router II Small Ancillary Current Router II Standard Mindflood Booster Agency 'Overclocker' SB5 Dose II Mobile Depot x1 Agency 'Overclocker' SB5 Dose II x1 Standard Mindflood Booster x1 Inertial Stabilizers II x2 Nanofiber Internal Structure II x1 5MN Quad LiF Restrained Microwarpdrive x1

Subsecond Jackdaw (~1b ISK, rigs free)

Notes:
Hecates and Asteros can go subsecond as well
but this has the best tank capacity by far
other implants + mods combos work if you have other needs

[Jackdaw, Subsecond Jackdaw] Shadow Serpentis Inertial Stabilizers Shadow Serpentis Inertial Stabilizers Shadow Serpentis Inertial Stabilizers Multispectrum Shield Hardener II Republic Fleet Medium Shield Extender Pith B-Type EM Shield Hardener Republic Fleet Medium Shield Extender Multispectrum Shield Hardener II Improved Cloaking Device II [Empty High slot] [Empty High slot] [Empty High slot] [Empty High slot] [Empty High slot] [Empty Rig slot] [Empty Rig slot] [Empty Rig slot] Low-grade Nomad Alpha Low-grade Nomad Beta Low-grade Nomad Gamma Low-grade Nomad Delta Eifyr and Co. 'Rogue' Evasive Maneuvering EM-704

Alpha Scanner Sunesis (stronger than Astero)

[Sunesis, Alpha Scanner Sunesis] Nanofiber Internal Structure II Type-D Restrained Nanofiber Structure Type-D Restrained Inertial Stabilizers Type-D Restrained Inertial Stabilizers 5MN Cold-Gas Enduring Microwarpdrive Scan Acquisition Array I Scan Rangefinding Array I Scan Rangefinding Array I Core Probe Launcher I [Empty High slot] [Empty High slot] [Empty High slot] Small Gravity Capacitor Upgrade II Small Hyperspatial Velocity Optimizer I Small Hyperspatial Velocity Optimizer I Core Scanner Probe I x16 Sisters Core Scanner Probe x16

Throwaway Rolling Sigil

Notes:
alpha-capable excepting highsots
midslots & cap boosters are unnecessary but cheap
de-Higgs it and it's just under the medium hole limit
you can MMJU these onto Drifter holes

[Sigil, Rolling Indy Sigil] Mark I Compact Reactor Control Unit Mark I Compact Reactor Control Unit Mark I Compact Reactor Control Unit Mark I Compact Reactor Control Unit Mark I Compact Reactor Control Unit Mark I Compact Reactor Control Unit 100MN Y-S8 Compact Afterburner Small F-RX Compact Capacitor Booster Small F-RX Compact Capacitor Booster Small F-RX Compact Capacitor Booster Prototype Cloaking Device I Interdiction Nullifier I Medium Higgs Anchor I [Empty Rig slot] [Empty Rig slot] Cap Booster 200 x210