I have and love the Canon 85 1.8; in fact, it's currently my ONLY lens. There is some fringing wide open, but that doesn't stop me from using it at f2.5 or wider almost all the time. In fact, I do a lot of my shooting wide open, in broad daylight. I find the fringing pretty easy to remove.
In my opinion, it's one of the best sub-$400 lenses you can get if you use Canon.