I'm new to machine polishing. I actually haven't even bought one yet, but I'm looking into it. I would like to know what you guys recommend as the best beginner tool. I read a lot about the PC 7424 here as being dummy proof, which I like, but I've always used Meguiar's products so I was looking at the G110. So I want something that's dummy-proof but will get the job done. So what's the best dual-action polisher out there?