As Parma TeleMon noted audio taper is most commonly preferred.
You'll need pots with a solid shaft to fit your stock set-screw knobs correctly.
I like the CTS pots made like
these from Mojo, with the short .25" bushing and dimpled bottom. The pots I most often find in Maryland local stores are the more common Allparts branded pots which have the longer .375" bushing and flat bottom like
these. If you get those with the longer bushing, you'll need a couple of extra washers (either the star or flat type) under the pickguard or else the knobs will be left sticking high off the pickguard surface. I also prefer the dimpled bottom style for its easy turning. I can get the flat bottom style to turn as easily by disassembling it, removing the excess grease in the pot bottom and lubing it with good spray tuner cleaner; or by spraying lots of that lube/cleaner through one of the holes and using it a while (turning it a lot). But the dimpled bottom type turns easily when I get them, without having to work on them.