The "BEST" site, so depends on what you are into. And I haven't been to hundreds of sites, so this is a limited opinion. I have been doing some web site reviews lately and for a well rounded bit of everything-gorgeous main girl, hot vid clips, lots of variety, updated often, real diary ( yeah, I know you guys probably don't care much about that, but I like it) I'd go with GinaLynn.com.

I also love Jenna Haze's site(JennaHaze.com) which has most of the above but even harder-core action. The best thing about these two sites is that if you join one, you get the other one free, and the girls are opposite looks/body types so you get the best of all worlds.

I personally have just fallen in lust with fuckedandbound.com ( yes I am a sicko, lol) So if you are into BDSM check it out. It has hundreds of pics/clips and full length movies of famous girls ( Audrey Hollander's name was what got me there initially, and a scene with Marie Luv kept me there) being tied up, chained up, slapped, flogged, whipped, clipped, and then forced to blow and screw their "master" I also love this site because the waiting time between choosing and watching a vid clip is very short (less then a minute). I have a feeling it's going to take me a while to "finish" reviewing F& B.com, lol, I don't believe I have yet watched enough hours of it's content to give it an accurate review, lol. Oh the tough job I have......
xoxo,
Cindi