Some who have produced videos I've enjoyed often and repeatedly include Alexis Love (probably my favorite right now), Brittany Stone/Angela, Jazmin/Jasmine Taliana, Lily Thai, Piper Fawn/Gala, Veronica Zemanova, Angel Dark, Traci Lords, Aneta/Anetta Keyes
that's off the top of my head
there's also some nameless little button-cute filipino waif in a video currently on my hard drive that I love, wish I had more of her.