Coming from a guy who doesn't have a clue as to how many basses he currently owns, this may seem odd

:
Don't buy another bass yet. Spend your free time on your craft instead.
I mean no offense and this is the same general advice I'd give anyone. Some spend so much time on the hunt that they don't spend enough time figuring out why things are as they are... or how to make them better.
It's a journey that, for me, won't end until I do. Because of the time I've spent exploring the instrument, the basses I play sound better. Regardless of cost. I have no doubt that's what Sharay did and any other player out there that has impressed you. It wasn't simply the bass, it was more about them and the time they spent than anything. That's something that you can do to. For for less than the cost of another instrument.
If you need a solid, do it all instrument, I'd get a newer used MIM active Jazz 5. Or wait for a good deal on a used MIA Jazz. I played a slightly used MIA Jazz Deluxe 5 yesterday that would put most boutique J's to shame.
In this economy, there are some absolutely bizarre deals that pop up frequently. You could find a $3k bassed used for $1k... but if nothing else changed, would you really appreciate it?
I found my Marleaux JB Deluxe 5 used locally for a crazy price... after it had been dismissed by at least a dozen of my friends/peers as "nothing special". I played it and it was clear there was far more there than they saw. Bought it, tweaked it, put new strings on it. Total cost to do that? Around $35. Now everyone wants it after they play it
Until the last 10 or so years I played one bass and really delved into how I could make it do what I wanted it to do. That involved experimenting with techniques, strings, amplification, learning how to fine tune them and just generally seeing what I could get away with. All of those learned skills translated over to every instrument I've played since. That to me is worth it's weight in gold.
So spend less time looking
for a bass and more time looking
at one.