If I had the Cyclo, and wanted something to accompany it, it would probably be a Porter Cable 7424xp, and a set of Microfiber, and the LC purple thin foamed wool for heavy cutting, and some foams for general cutting, polishing, and finishing work. Maybe get pads and plates in the 3", 5", and 6" sizes.
It also depends on the type of work you`re doing. I can use the pc even in the production environment, without any complaints. Also, the PC is at home with the weekend warrior, or the casual user just looking to take care of their household vehicles. It also makes a great carpet scrubber for interiors.
The Griot`s is similar. Smoother, quieter, more robust, but I`m fine with the PC. We have a gg6 at the shop, and I still prefer the PC for some reason.