Getting The Best Songs off www.allofmp3.com Quality Over Quantity?

Hi I am into general pop music and European Dance Music as well as
remixes  anyone know of a website that archives the best music hits
charts hitswise from the the 1980s ,1990 ,to present 2007

Popular Club Hits Floorfillers that Djs play a lot:( lol

I know you can you can preview music on allofmp3 before you buy its
just I have other things to do:)

Plus I believe in Quality over Quantity

does allofmp3.com have a fully comprehendsive musical archive or is
there a better website I have tried www.rhapsody.com in the past its
just music rental you never own the stuff plus there are a lot of
artists missing.

Regards,

Heidy