I have their desktop/laptop version. A multi user [family?] license. I've had good success with it so far.
It does find quite a lot of extra garbage that is left by window's and the vendor's, uninstall programs.
Only one minor issue with the desktop version, there was a licensing number mix up and they had to reissue 1 or 2 new license numbers.
I jumped in on their portable deal when it was available. Hopefully it will use just the one license number , as it moves from one pc to another. Without having any problems like the other license did.