Upload & Sell: On
You'll find tons of threads on this topic with a search for '85'. My favourite '85' depends on what I'm doing. Overall, I think the Canon EF 85/1.2L II is the best that I've tried. The Rokinon/Samyang certainly provides the best bang for the buck, as well as the best wide-open bokeh for challenging subjects, but it's not as sharp as the others that I own. If I want a fast 85 for travel, I take the Planar 85/1.4, which also provides the best '3D' rendering at f/5.6 to f/11 (although the L is about the same here).
Overall, my favourites are, in order, Canon EF 85/1.2L II, Contax Carl Zeiss Planar 85/1.4, Leica Summicron-R 90/2, Rokinon 85/1.4, and Mamiya C 80/2.8N. I posted comparison images from some of these lenses at http://www.fredmiranda.com/forum/topic/952008, as well as on other threads that I can't find right now.