Your favorite solo players and why?

[grahambop]

Louis Stewart.

[PMB]

Louis Stewart.

Great to see that Out On His Own has been re-released in a remastered edition:
Out On His Own | Louis Stewart | Livia Records

[Hyppolyte Bergamotte]

Oh..I was born the same year
Life is too short

[BWV]

This was a nice solo album

[Runepune]

Jesse Van Ruller does wonderful, organic solo stuff. Since you mentioned with vocalist:

[YOGA64]

A unique and great player:

[Flat]

Free to stream on YouTube:

Not solo, but Blues on My Mind is one of my favorite jazz guitar albums. Also free to stream.