Had a Gaddy for a little while ... thought the thin neck , BadAss bridge, vintage pups, was the ticket .... but it didn't last long ... even with the addition of a Audere pre .... ( was either that or NoiseLess pups )
neck was too small .... though i played thin necked basses the first 15 years, i've played 5 strings the last 15 ..!!
i think that is why neck neck felt overly small to me ...
hardware was fine, sounded fine ..... but i built a couple Fenders that seem to play and sound better ... a 74 body w/MightyMite fretless neck ( frets ground down , then glossed over), DiMarzio model J pups, 62 style concentric vol/tone knobs, BadAss w/slotted saddles , GHS PressureWounds ...
and i just put together a 78 MOP blocked/bound neck , 78 tuners , Vintage jazz pups ( like the Geddy ) ,Chrome Flats ( for a different sound ) and the remaining Fender take-offs from the other bass ... i put those together for about $800-900 each .... if you're into that kind of project ... it's been fun , but not something i'd like to do ... often ..!! things don't always fit as you think they should , even being made to fit Fender parts ..!!!
both of those necks feel very good ... and they both sound great ... the model j pups work well on fretless ..!!
so i'd say , get which ever ones feels better .... you can change a few parts to 'tune in' on the tone you want ...!!
that's much easier than altering the neck , one way or another ... and if you find something really cheap that feels great .. it's fairly easy to fix it up a bit with slightly used parts you can find here or on the Bay ...
later;
happy hunting;
DC