I have used REVO Uninstaller (paid version) for 6 years on 9 PCs and have never had a problem. I have found it to be an excellent piece of craftsmanship. It is a bit more expensive than some of the other uninstallers but when it comes down to cleaning a PC system good enough to keep it up and running under heavy data loads and gaming conditions without any hiccups, I would recommend REVO to anyone without hesitation. You can't get better than the best