Hi, I was going to go to Guitar Center today, and either pick up some Jazz III's, or some of those new Dunlop Ultex Sharps, and I was wondering, are these only going to be good for playing fast, metal stuff? I don't really play a whole lot of metal (some, but not a lot), and I don't want picks that are only good for that. Are these fine for, say, clean chords and things by Radiohead (like Street Spirit or High and Dry)?
Its just a pick, you'll be fine. Worse case scenario is you get a bit more bass response than you'd want because the pick is thicker.
I use pointy Jazz III stubbies to play classic rock and hard rock. Whatever you enjoy the feel of should be what you use.