A DynaVibe works pretty good. Doesn?t give you as many details as a more expen$ive setup, but if you have access to one, I would try it. I?ve done a few prop balances with our EAA chapter?s DynaVibe, and I?m pleased with the results. There has been noticeable improvements in vibration. I don?t know what was causing the vibration, prior to balancing (or what do do about it), but it was gone after the balancing procedure. A professional prop balance in my area is $400. Probably worth it. But using our DynaVibe is free, and if we eliminate vibration, I would say it?s more worth it. YMMV.