No experience with Meguiar's but the PC is nice, however for a similar amount of money I would go with the Griots. It has more power and a lifetime warranty. You will have "naysayers" and "fanboys" of each type but if you create a pro's and con's list and try to take bias out of the equation, the Griots seems to be the best out of the 3. I am sure others will follow with their comments but just search around the forum here. There are lots of similar questions asked and many people giving feedback about them all. All of them have problems (they are mechanical, what mechanical does not have "bugs"), they all have their selling points. Read as much as you can and once you make the purchase, remember why you bought it and not any sort of negativity anyone else gives you because you did not buy what they have.