Mirror Glaze is good stuff but it won't stay with you.
Paint is thin on our RVs so be careful with buffer.
At Mercedes when they did our they used just a foam pad...but the paint wss perfect just a bit of sheen.
Because our Mh is so large, for me anyway, use Mequires spray polish and spray synthetic wax.
last time they washed our AMG I had them use the new ceramic spray on wax and rinse off with strong flow of water.
Works good but the surface is is flawless.
This Ceramic Wax, is the latest and greatest of course.supposedly but...we will see before doing a detail job on it.