I've always been a one-bass guy. It seems to be the way I'm wired.
For nearly 55 years, I've been about playing in front of live audiences, and I like having a consistent, "one bass to rule them all" for gigging.
I'm not hot on studio work, and I've never been famous, so I don't need a ton of specialty instruments, or a dozen colours to match my outfits.
My first long-term relationship was with a '64 P-Bass, with a narrow neck, the limited edition red metalflake finish, and beat all to hell. I bought it initially because it was the only pro-grade instrument I could afford at the time.
Once I stripped it and painted it black, I developed a love/hate relationship with the thing. It worked well, but I didn't love it.
At first, I was like Jimmy: I wanted something more exotic, but couldn't afford it. The itch never went away, but I grudgingly made my peace with the Precision, mostly because it worked so well in the mix. I eventually got so I could afford "better" basses, but bandleaders wouldn't let me get rid of it.
That tension lasted from the early '70's to the mid 80's, when I saw my first 5-string, and fell hard for the low B. By then I had a family, and my gigging income had fallen off. I did a couple of trades, trying to work my up to an active fiver that was as good on stage as the old Precision.
I finally solved that problem in 1993/94, when I finished building a custom 35" single cut neck-through fiver, with lots of help from my luthier buddy Tony Karol
Karol Custom Guitars.
It was styled roughly like a Fodera, but with the general body outline of a Precision. I routed it for one and eventually two EMG soap bars. That one lasted me the next twenty-odd years.
A chronic back injury from my teens finally caught up with me in 2013. When I realized that it was get a lighter instrument or retire, I sprang for a Dingwall ABZ.
At this point, I'm pretty sure that's the one I'll be buried with. Clarity, tone, flexibility, ergonomics, I now know that this is exactly what I was looking for way back in 1973.
Ironically, as much as I rarely gig anything but my #1, I've been intermittently unfaithful since the mid 90's. I like to have a little something different on the side, just for inspiration and variety.
Since they are just for fun, I've had some pretty weird stuff in that #2 seat- ABG's, an Ashbory fretless "rubber bass", a couple of sold body electric uprights, a three-pickup Epiphone Viola bass, and most recently a couple of little guitar-sized ABG's.
I thank God for so many years of stage time, and hope I'll still be going strong in another 20 years!