I am looking for a good registry cleaner for my x40 laptop, running XP Pro. I have done some research on google, Registry Mechanic and CleanMyPC Registry Cleaner seem among the best,

CleanMyPC Registry Cleaner http://www.registry-cleaner.net/

Registry Mechanic http://www.pctools.com/registry-mechanic/

Is there anyone who is using these cleaners can share your experience? Which one is better? Or any other recommendations?