I've been using the Keith Monks Machine since 1986 and they are great.
I've never used a better more dependable disk cleaning machine. Sometimes
I use it in conjunction with the Disc Doctors record cleaning fluid and I
end up with some very clean, quiet discs. It's not the cheapest way to
go, it's just the best way to go. If you really want to treat your discs
the best way you can, Keith Monks is the way to go no if ands or butts.