I've always been a fan of Tom Byron's work, from Elegant to Extreme to his new company, so I may be a bit partial, but for my money Evolution puts out the most consistently strokeable porn out there. I haven't been disappointed yet, and I've watched almost all their stuff.
Evil usually hits the mark, particular Jules' stuff. This may be sacrilege to some, but I'm not really into Buttman. I hate his whiny voice. And Randy West is just dead fucking weight over there.
The rest of it - Anabolic, Zero, RLD, PXP etc. etc. etc.... It's all indistinguishable from the next. If there's a girl I want to see, I'll pick up something, but otherwise...