Just linking this thread. One of the posts is a link to yet another thread as well. It seems like a pretty comprehensive list of upright bar options.

http://www.bikeforums.net/commuting/...endations.html

I personally find that I have to have my wrists pronated for a comfortable ride, and I can't reach drops without bending my neck too much. Ah, old age. With swept bars, I can make my bikes fit me like a glove, and I can ride indefinitely with no numbness or wrist pain.

Given that a bike is an adaptation of our bodies to the environment, and no two bodies are alike, it helps to consider a variety of options when looking for the best possible fit.