This is my first post, i hope it enough.. thanks
i have been using system mechanic for years and i don't have any problem with it. For Reg Organizer, i'am just trying it for a month.Good security setup but redundant optimization apps.
Between those two I would choose just Reg Organizer if you have already purchased the license, used with caution.
But Ccleaner is more than enough in a normal context.