Well geez... if I HAVE to pick two. 
I'll take a Zon fretless 6 (don't know if I'd want a Sonus or a Legacy, I've only played a Sonus and it was quite an experience) with a piezo bridge, and a Sadowsky fretted 5 with the as of yet unreleased EMG Twin Coil pickups (they're based on the CS pickups and have a switch between single coil and humbucking modes... EMG's site says they'll be out later this year).
I can see myself accumulating a pretty large bass collection if I ever earn the money to support one.. but just those two basses would cover a lot of ground for me.
I'll take a Zon fretless 6 (don't know if I'd want a Sonus or a Legacy, I've only played a Sonus and it was quite an experience) with a piezo bridge, and a Sadowsky fretted 5 with the as of yet unreleased EMG Twin Coil pickups (they're based on the CS pickups and have a switch between single coil and humbucking modes... EMG's site says they'll be out later this year).
I can see myself accumulating a pretty large bass collection if I ever earn the money to support one.. but just those two basses would cover a lot of ground for me.