I prefer some of the guys and girls on the amateur sections mainly. They seem far less artificial although it often means that you can't follow more of their videos as they are anonymous.
Not sure I have a true favorite but I really like some of the women from older porn in the 80's and 90's. They are just so much sexier than the girls today. Could do without the hairy bushes though, lol! Most of the girls in todays porn are just so fake and I dont only mean their bodies.
A few I really like are Tracey Adams, Kay Parker, Kylie Ireland, Julia Ann and Janine. I think a few of them are still performing.
There are a few newer ones that are good too, Sascha Grey is really hot and actually a decent actress too.