i love my 4.10's under 65, which is prefect for what i do, i never speed on the highway or country roads (unless im trying out new parts or practicing launching

)
one thing i dont like is i have to shift very quick... I've gotten very good at quick shifting however ( pro 5.0 ftw)
whatever gear you get you'll love'em. best way to find what ones you like is to drive a mustang with both gears you are looking at. however this wasn't an option for me becuase all my friends with mustangs are stock, auto, v6 convertables... 3 friends with this setup.