The PC seems to lack power to me. Any weight on it bogs the machine down, and it takes multiple passes to correct harder paint types. I even seem to have trouble getting quality results on my wife's '07 Saturn paint. I own a wide array of polishes, thinking that the combo was wrong but with a much lighter wallet I am still at square one. I also thought it would be experience, but I have owned and used one for almost 2 years now. Granted I am better at it, but it doesn't live up to the hype.
The UDM makes the promise of being stronger, and better in all regards. The Cyclo seems to be the silent underdog yet pricey in comparison (machine cost and new pads). Perhaps I was being to harsh on the above post, but a "gentler" more user friendly machine wouldn;t hurt. The PC just beats the crap out of your hands for a full car, much less SUV.