For more info on the redesigned Griots Garage G15 & G21 please see this recent thread:
Redesigned G21 and G15 Polishers
For more info on Griots Garage new G9 polisher, please see highly-respected Autopian All-Star (my opinion) Mike Lambert`s review thread:
https://www.autopia.org/forums/machi...highlight=BOSS
Here`s a thread asking the same question you are, "What polisher should I get?":
https://www.autopia.org/forums/machi...highlight=BOSS
Seems, though, you need to ask yourself IF you need to go the cordless route (IE, rechargeable battery-pack) with polishers. It is a new way of polishing and many detailers like not having a cord to deal with. The downside is the run time and the initial cost of such a machine. Flex makes some highly respected (and priced) cordless polishers.
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