I got my centerstand from Crow Cycle and love it. I have sat on the bike on the center stand and pedal started the bike in my garage, with no ill effect.
The only negative I have heard about these stands is that on the adjustable ones (like I got) that people have had the legs loosen up and get lost on a ride. I locktited mine, and so far have not loosened up at all.
This is the one I got for my Cranny, I think a lot of the guys get the tall version instead: http://www.crowcycleco.com/bicycle-c...ust-black.html