I can't explain why I use my bits becuase I'm not that educated on bits...
Pistol: english I use a double copper roller d-ring snaffle (I've used it forever, mild bit) for his western I use a broken snaffle, copper super mild
Blue: port bit for western and a port bit english for flat pleasure and a slow twist for hunt (I think he'd be fine w/ Pistols bits though)
Black: TWH Bit, it's a curve
Beauty: has a curve snaffle but she likes Pistols bits so I'll probably get her something like that
Riley: Port for home, snaffle or bosal for show, slow twist, wire, whatever - my trainer says use everything on him so he'll respond to anything... I dunno....
Style: egg butt snaffle....
"Be a best friend, tell the truth, and overuse I love you
Go to work, do your best, don't outsmart your common sense
Never let your prayin knees get lazy
And love like crazy"