41.5" and an Eb neck for me. probably because that's what my first bass had. i bought an EUB and had it made to these specs too, and i bought a giant bass and had a false nut put in to make it 41.5 and had some wood taken off the heel to make it Eb. a few years later i bought a 40.5" bass thinking that it would be easier to play and i cant play it in tune to save my life. too bad because it's a nice bass and sounds good. the main thing stopping me from trying/buying and upton bass is the 42" string length. i know they'll shorten it if i ask, but then there goes the good price.