I have a list.
Prefer autos over revolvers.
Prefer hammers over striker fire.
Prefer double action, single action, over DA only.
Prefer external safety over internal ones that do what exactly?
In a 1911 style gun, prefer the safety with the hammer down, rather than cocked and locked only. Won't carry cocked and locked, EVER ! (Example Star PD )
Prefer double or tripple stacked mags over single stack.
Prefer decocker over other safeties.
Prefer Snap-on over Tupperware.
Prefer 10 mm with jumbo jammed full magazines, which means I get saddled with a striker fire, hammerless, no safety, DA only, half Tupperware, half gun, just to get the round and capacity I want.
Had the male Tupperware flame thrower twenty years so far, holding up well.
Recently purchased a Beretta Storm Subcompact. Fun having with some of the features I lost years ago.