Metabo user here!!
Awesome rotary thats for sure. Lighter and smaller than the Makita and Hitachi thats what sold me. The size and weight is very very important as it allows me to work faster without getting tired. I find that using
Meguiars solo 7inch pads i have never made the thermal shutdown and i have once worked when it hit 100 degrees. 37 degrees celsius for us Australias.
The flex looks great too. I may have bought it if it was available in Australia 6 months ago when i bought my Metabo. Its interesting to see it only uses 6inch pads. Maybe if you put a 8inch pad on each and tested which one bogs down the most we maybe able to get a fair comparison.