The three I've got, after almost four decades of trying to figure out what I like:
On the left, my very first bass, a 1986 Aria Pro II 'The CAT Bass,' one of the low-priced Samick-made models. Bought it in Germany in 1988 and taught myself to make noise with it. Has had a lot of mods over the years- it's on its second bridge and set of pegs, third nut and set of frets, third set of pickups (Dunan QPs). Has also had the dots replaced with bigger prettier ones and I made the inlaid cover over access-rout for the truss rod as I always found that hole kinda ugly.
In the middle, the most recent addition, a 1989 Esh Serious Bass 5. When I was buying the Aria Pro in Germany, one of the shops I looked in carried Esh, which at the time was a very small operation, basically unknown outside of Germany. It's hand-made, one of a small handful 5-string Seriouses made, with the 4-string version only numbering something like 40 or 50 made. Fast forward to the early 2020s and I decided it was finally time to get a Serious and the modern internet-age made it possible to shop overseas from home! Didn't even know they made it as a 5 until this one came up as the only Serious available. Totally fantastic instrument, neck-through, active Bartolini system, fingerboard extension, top scooped for digging in, asymmetric radius, Schaller hardware, sounds amazing, sweet to play, but heavy as hell!
On the right, and early '80s Kawai F2B, purchased in the early '90s when I wasn't looking for another bass but wandered into a shop to kill some time and saw it hanging on the wall, caught my eye because I thought it was an Alembic at first...hmmm, Kawai? Don't they make pianos? Let's try it out...Hey, NICE! Five minutes later I was asking the shopkeep where the nearest ATM was! The way it played really impressed me, and the build-quality is a luthier's wet dream! Nice details too like a massive brass bridge, strings through body, an aluminumcavity-cover secured by machine-screws that go into threaded metal inserts, graphite nut, 18V active electronics. Around ten years ago I had a shop do some stuff to it like a fret-dress, intonation, etc., and the guycalled it a 'beast,' saying it really impressed him too.