What are the best Registry Cleaners?

I’ve been researching Registry Cleaners and most critques are based on personal associations with the products. So I need to hear from a jury of my own peers. What is your personal experience with various Reg. Cleaners?

Most people don’t really need any registry cleaner.
All tests I have seen so far are saying that your computer will not be faster.
Many programs are even making it worse.
If you don’t install random junk every day then everything should be fine.