Best cleaner/optimizer

I've been a big fan of CCleaner, but I have recently been using AusLogics BoostSpeed.

CCleaner is the best

For a free solution, CCleaner is one, if not THE best.

windows 7 manager x64

CCleaner

advanved system care pro !

Go with CCleaner... It's fast, free and good

system mechanic is the best dudes

Winaso is also good

CCleaner the best..At least for me:)