I'm thinking of getting the 3" version myself... Just debating whether or not it really is needed or not. I might just get a 3" or 3.5" backing plate instead.
As for Griot's customer service, it is quite good. But what's the point if the machine is poorly built? The griots does have the most power, and that's why I bought one, but they have the highest rate of failure amongst the current DA's. Meguiars had a cord problem but that's been fixed.
Now, Griot's even refuses to fix any more polishers if they find out it's been used "professionally" meaning they don't like it if you use it everyday as part of your business and it keeps failing.
I emailed Kyle at Griot's, and he basically said the tool is only for the weekend warrior or hobbyist. Judging by some more research, it seems the Griot's is just a recolored or rebadged Chinese made DAS-6 polisher that you can buy off of many export sites. No wonder it does have a somewhat high failure rate.
I've just gotten my own GG6 and I'm already dreading it dying on me because even though they have a lifetime warranty against defect, it's just a hassle sending it out.
My rambling aside, do you guys feel the 3" version would be a good buy, or to get a 3" backing plate for the 6" polisher?