I would agree that Tommy Flanagan never stopped stretching, and that some of his later recordings like LET'S, SEA CHANGES and the Blue Note disc (already OOP, IIRC) are excellent. THELONICA, with George Mraz and Art Taylor, is also fine, but features all the production touches you would expect from a 1982 "straight-ahead jazz" recording (e.g., direct-miked bass).
Those Detroit cats... I love Hank Jones for his elegance and Barry Harris for his feeling for the tradition (not overly reverent), but to me Flanagan was the most full-bodied and gutsy of the three.