ive just surf some of those so call tube site and most of them suck!
http://www.pornotube.com/ 1 out of 2 video don't work or are crappy 1 minute movie, rude is most of the time very slow and is a pain in the ass to surf and i get lots of lag on video .
megarotic have some killer vids but not that much you may think you have to search a lot to find the goodies..