WE just got back from 935 twisty and super scenic miles on the western slope of Colorado. The two 500s ran without issues ( engine lights at altitude excepted). You couldn't find more fun roads to ride I do not think. Here is a photo, and if you care to see about 18 more you can look at this flickr slideshow: http://www.flickr.com/photos/andiamo54/sets/72157622095920801/show/
There is a photo in there of a guy riding my 500 in a full race suit, we found him tearing through the canyons on his Honda 600 sport bike ( forget the model but it looked fast), he talked about his interest in the 500s but had never seen one. I told him to go ride it awhile ( he certainly seemed a capable rider!) He came back and said "This thing is BADASS!!" and had found the point where the stand drags rather quickly.
I am keeping my eyes open here for a good used one for him--I was impressed that he liked it that much!