indeed! there's no ideal programm. every programm has its good features, the same has its bad.
what amazed me more - is that "cclean" is a free prog. it rare happens when peogramm FREE & GOOD. it's often vise versa. though there's daemon tools, also FREE... & works fine. it means, it exists though.
PS, "tune up utilities 2008" didn't notice some files & registry traces, "cclean" did! the same is for "system mechanic".
PSS, sorry for my broken english - it's not my resident (native) one.