Thanks @BigRedX. Yes the ATN system, with the selector and the Varitone was what interested me (and the jazz master body shape) - I am a bit of a tinkerer I think, I like switches and knobs - I ended up getting a Jaguar bass in the end.
Half of me still wants a Bass VI (or similar), but it would be to learn to play basic guitar stuff, like chords and things without going to the skinny strings side, so my requirements may actually be different from yours. Are you planning to play chords?