This is the info i have compiled on the Harbor freight DA
http://www.autogeekonline.net/forum/...tml#post957911
http://www.autogeekonline.net/forum/...tml#post940047
Chicago Electric Platinum 6" Dual Action Polisher
http://www.autogeekonline.net/forum/...lishers/55905-...
based on a several day research on this very topic, i come to the conclusion that for longevity sake the 5.5 backing plate would be one's best bet, the HF pads seem to work with mixed results varying across several forums i visited. if you like you ca pm me and i send you the links i got on the...