Best solo piano recording...redbook CDs only...Jazz, easy listening, piano bar

1: Keith Jarrett: Koln Concert - best selling solo jazz piano album in history
2: Liz Story: Solid Colors - wonderful late night music; beautiful harmonies and progressions
3. Bill Evans: Alone - hey, it's Bill Evans; 'nuff said

A couple of mental late-arrivers:

"John Cage: In a Landscape" performed by Stephen Drury.  Not the aleatory John Cage one might expect. 

If not already familiar with him, might be a good time to make the acquaintance of Harold Budd.  His 2000 recording, "The Room" seems like it could be another that fits your requirements.

BTW - no claim is made that anything I've suggested is a "best".

Try Dave Brubeck's "Nocturnes".  The Naxos recording, performed by John Salmon, is nice.  Also George Shearing, "The Shearing Piano" is quite nice.  And I think Andre Previn's piano playing is wonderful, try "Ballads for Solo Piano".

Perhaps Fiona Joy's, "Into The Mist", from Blue Coast Records. I have not heard the CD version but the DSD is very organic and lifelike.