I have a Porter Cable 7424 and a Meguiar's G110 v2. Both are fine. The PC works great with a 5" pad, but struggles a bit when slinging around a 6" pad or when using the Meguiar's DA Microfiber system. The G110 has a bit more torque. Anymore, I've been a huge fan over the Microfiber DA system over foam for correction. I usually keep my Microfiber DA backing plate on the G110 and either have a 5" or 3.5" backer for foam on the PC.