I really love my 85 1.8 too but the only thing that bugs me is the purple fringing. My copy is tack sharp wide open but I was using it at the weekend and ended up with alot of purple around the edges. Its ok when its not bright outside. There is a slider in lightroom to remove it but it sort of messes up the adjacent colours when you use it (when pixel peeping). Apart from that its great bang for the buck.
With regards to 35L I really regretted selling mine recently. Im glad though that im now loving the sigma just as much after sorting out some initial focus issues.
Is this what you're using in LR4? Works well for me.