Lots of threads about personal choice on this one - have a trawl through and see what people use and what works for them...
For me I have used chem guys v36 and v38 with some success, and now use menzerna products..
With a DA polisher you should be fine in terms of soft paint - if ur going to wet sand then that's something different altogether and Need to ask someone like pieman (Ron) for his advise...
Hope that gives some help