I'm using 1024px on my #wrap just because it makes my CMS blocks and it's content look a little better. If i could get my way, I would set it at 960-980px I think the narrow look, depending on the community and content, makes a site look 'cleaner' and my eyes are not wondering all over the place.
What do you think, what is your ideal width and why? do you even bother..?
1200px is nice also. I'm not a fan of how wide the defualt Prosilver is.. it makes me nauseous having to turn my head to read words from any forum using it. I mean it's not horrible or anything. ofc just my personal preference.