I'm using DirectNic for my domains and they have a pretty good tool for finding alternative names, but I'm looking for specific keywords and HotDesertKnights has all of the .coms already, . If I go with a 4 word combo .com would I be better off with SE's than a if I went with a 2 word .biz?

For example: if my site title is "Big Uncut Cock Movies" (which it isn't ) Would I be better off with biguncutcockmovies.com or uncutcocks.biz? I would like to avoid hyphens... they look plain old shitty to me.