pbjb

Hi, I' m searching for informations about the Tbass I would like to know how many versions of this bass have been made ? And what' s the differences ? I have seen some with hyper active status pickups and some with exposed pole pieces... Some made by trace elliot, then by status and it seems there is a graphit neck version ?? Also I am concerned by the weight. I have read they can be heavy, is that true ? These bass looks great and have numerous upgrades over a fender jazz bass : 24 frets, 3rd pickups to avoid noises, zero fret, special headstock, bridge... Any informations are welcome Thanks by advance