One thing I've noticed with a lot of content recently is that it's lacking in the hardcore department.
I like premiumcontent's southbeach amateurs sets.
Although I'm a little biased because I work with them.
http://www.premiumcontent.com/pages/southbeach.shtml
We also use Holio, Content Broadband (they sent us a letter that they were out of business last week) , freshwebmastercontent, and some in house stuff that we shoot.
Best of luck to you,
James