I have a friend with the Griots, I've had both the Meguiars G110 and G110v2, PC and PC XP and the Harbor Frieght DA (aka Chicago Electric). If I had to pick one of those, I'd probably go with the HF DA. Its the lightest of the bunch, power is pretty close to the Griots and its cheap enough you can buy one and a second one as a back-up for not much more than one of the others (or less if they ever issue the $49.99 coupon again). Of course, the Rupes is a superior machine but its a lot more expensive. If you have a pretty new vehicle that doesn't need major correction, you are fine with a lower priced DA.