I have always had rotary polishers for my cars and boats. I have as of recent got into sportbikes and would like to keep the paint "DIY" nice. My question is what size DA should I get. I would like to be able to use the machine on wide verity of applications (bikes, Boats, Cars, Other random stuff that needs polishing). I have looked on the forums but have not came up with any information that leans me towards one size over the other. I was looking at the ‎Milwaukee M18 FUEL 15mm Random Orbital Polisher as I already have the batteries. This polisher is a 5" pad and I'm just concerned if it will not be super effective due to the tighter and more intricate designs of motorcycle fairings. The money thing is not a huge deal breaker and I'm sure having two different machines would be best. But if possible I would rather just buy one size.