I've been lucky to enough to own or play most of the basses I have coveted (Wals, Gibsons, Ricks, Shuker, Alembics, Alleva Coppolo's etc) and - after a long process of buying and selling - have ended up with three regular Fenders (P, J and fretless J). Can't really see me being after anything else.
However, if there is one bass I'd still really like to have a play on it would be an Alembic Stanley Clarke