Help me select few vinyl LPs

I owe my friend big favor, and since I know he recently obtained high quality TT I'd like to buy him few "must have" well recorded LPs in Jazz or Rock.  He is new to vinyl and has only few LPs.

I had TT 40 years ago and don't know anything about vinyl quality.  I buy CDs on Amazon, buy there might be better places to buy vinyl.  I will be grateful for any recommendation.