i use the 1200watt Silverline, great machine......
one word of advice, bin the backing plate that comes with the unit and get yourself over to Clean your car, Tim will sort you with all the gear you need.....
the thing to remember if using the Rotary is to always check the area being corrected regular, you dont want excessive build up of heat. Prime the pad first, i use Last touch.
the other option is the Megs G220, this has just had a revamp. very hard to do any real damage with these, but the correct will take longer...