I've had only a few in my 5 years playing.
1st: Encore P bass, loved it, sold it to a mate for £50 to fund...
2nd: MIM fretless jazz. I really didn't know what fretless really meant in terms of sound, or what a jazz bass was good for but I loved it too. prettiest bass ever in 'agave blue'
3rd: I had an obsession with 5 strings at some point, so I bought a dean 5er that I still do not know the name of...just said 'dean' on its oddly shaped headstock. Great sounding bass other than the B which was horrific. Very clean active sound, but it made me want something simpler, so I sold it (for double what I payed) to buy...
4th: MIJ P bass. Have it still, it's a p bass. Super cool, love it.
5th: MM stingray 4. Love it love it love it love it. Sparkly and orange, funkiest monster in the universe.
6th: I really had the whole MM thing going on so I bsold my jazz to buy a fretless ray. This is the nicest bass I have ever played...so effortless and you can literally feel the quality in your hands. Natural with incredible birdseye neck.
That leaves me with the P, and 2 rays. I want a bongo 5HH, 4H and a G&L JB-2. Then I'm set for basses.