Here's another vote for the Park PCS-4. If you can find one used like I did, Park has parts available to rebuild it. This stand will fold flat and lean against or hang on the wall. It has adjustable height which may be very convenient depending on your back and/or knees. I find mine plenty stable even with a steel mountain bike hanging from it. The one weak link that may be a problem, is that the clamping lever which locks the rotation may break off. If that happens, just cut a piece of pvc drain pipe, cap the end, and push it over what's left of the handle assembly. It will be a snug fit, (heating the pipe with a blow dryer helps), the clamp will work fine, and it'll save the about $30 cost of a new head. It may not be the lightest available, but it is easy enough to carry that I move mine from the garage to the basement depending on the weather and what needs to be done. Shoot, a while back I had it in the kitchen polishing my wife's Mt. Hood while I watched one of Obama's speeches.
Walt