I'm sorta surprised that no one has mentioned Martial Solal's MPS recordings. In this listener's opinion, they're among his very best.
According to the incredibly subjective HutchFan Five-Star Scale, I would rate each of Solal's MPS LPs as follows:
Martial Solal & Niels-Henning Ørsted Pedersen - Movability (1976) -- 5 STARS
Martial Solal - Nothing But Piano (1976) -- 5 STARS
Martial Solal / Niels-Henning Ørsted Pedersen / Daniel Humair - Suite for Trio (1978) -- 5 STARS
Martial Solal - The Solosolal (1979) -- 4 STARS
Martial Solal / Lee Konitz / John Scofield / Niels-Henning Ørsted Pedersen - Four Keys (1979) -- 4.5 STARS
Lee Konitz & Martial Solal - Live At The Berlin Jazz Days 1980 (1982) -- 5 STARS
I always thought these would make a great Mosaic set. Oh well. I guess that ship has sailed.
On the updside, since Edel's acquisition of the MPS catalog, many of these vital recordings have been made available again. On the downside, they're largely only available as downloads.
Regardless of how you listen, I would strongly recommend all of these records.