This was super helpful. And it's kind of ironic; I too am a Deadhead who cut my teeth in jam bands - but am now trying to find my way in the 2-5-1 world of jazz.
Have you played your fretted MB-2 with a drummer in bigger bands? I am in love with the sound of my Deep-4 fretless. It sounds beautiful in duos and trios, and it sounds great with a drummer, if the drummer has a light touch and plays with finesse. But when I try to play the fretless Deep-4 with more aggressive drummers, or in bigger bands, it gets a little lost in the mix. I'm wondering if a fretted Rob Allen would be punchier, and cut through better in those scenarios. Any thoughts would be appreciated.