I have 2 Conklin groove tools 7's, still play em on and off, I've been playing my Tobias 6 lately, still waiting for my Alembic 6 to be finished, but I found a used Modulus fretless 7 prototype, it has a smaller width neck than the Conklins and is quite comfortable to play, it was custom made for Karl Hill that played with Ginger Baker at one time.
Bruce