If you are a beginner, I would stick with a random orbital instead of a rotary. A very good RO buffer is the Porter Cable 7424 that you can pick up at Lowes or Home Depot for under $120. The pads that come with the PC are useless so get a set of good pads from someplace like properautocare.com
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"The true delight is in the finding out, rather than in the knowing." - Isaac Asimov
'99 SLK230 Sport
'00 ML320
'95 BMW 525iA (RIP)
'99 Honda Passport
Check out the Cyclo Orbital Polisher. Easy to use and great results. See topoftheline. All you need is a light cut swirl remover, a sealer (klasse AIO)then a nice carnuba (pinnacle souveran)and you will be amazed.