Fixed or Fluid? And what fixed width?

[SatsujinX]

I either use 750px for fixed or 85% for fluid. I don't like fat pages that fit the screen. It depends on your type of content. If you have a lot, put it as a 95% fluid. If you're less professional and a recreational site then have it slim, it's easier to read small amounts of content on a slim page, makes it look as if there's less.