Chuck is being way too generous - the sound on the two Left Bank Jazz Society sets is actually quite bad - distorted piano, nasal alto etc. It's especially problematic when applied to Jackie's unique tone - it really sounds 'off'. The playing is great, but I really have trouble listening to these too often.
Montmartre and the two Dexters are fabulous; Lullaby is only 'very good'.
Bertrand.