The albums that I bought new during the past 40 years 90%. The used albums that I have bought about 50%. Many of the extra "sounds" are not from surface contaminates that can be cleaned away, but from permanent vinyl damage either from poor cartridge alignment, worn out stylus use, or other inadvertent happenings while in the posession of the previous owners.
Vinyl cleanliness
How many albums do you own that don't have ANY pops or clicks from beginning to end after a thorough cleaning? I have yet to find one, and was curious as to your results.
And yes, I know how to clean my albums ;)
And yes, I know how to clean my albums ;)