If at all possible, test drive a program before you buy it.
While scanning the various sites I go to, I find 101 Registry cleaners
that promise the user the world, but every one of them basically does the same thing.
Unless you test drive a given software, you will not know if it will "fit" your system, or meet your specific needs.
Newer, or trendy, or fancy graphics does not make a software necessarily better. I'd stick with the tried and true companies if I am going to lay down hard cash. For my money, the user cannot beat Registry First Aid, Platinum Edition ...but I am biased! Get it from Rose City Software at Windows Registry Repair From Award Winning Registry Repair Software