You can also pick up a PC at Lowes for $109.

The 10" is, IMO, about worthless. (I do not mean that as a flame or slam, etc).
I had a Sears 10" and it was worthless for anything other than a huge, wastefull applicator.

They do not actually polish, just kinda bounce around on the paint plus the large 10" uses too much product.
The big drawback is that it uses those cheap bonnets instead of quality professional pads.

Just my honest opinion based on actual hands on...

Hope this helps