This lens is just too fragile for me, the second time in a year it's gone back for USM repair. Canon should be ashamed, that's all I'm saying.
I'd like some experience with alternatives so that I can make a choice. It's not often that I used the 50mm but when there is a need for f/2.0 or so it has come in very handy, and its horrible design notwithstanding the image quality was great. I've been considering the Sigma 50mm f/1.4 EX and seen mixed reviews. Any thoughts on this one, or other manufacturers' choices?