I know you are also a mandolin player; you might better shopping for a Lloyd Loar.
I've been fortunate to be able to play & study a lot of basses in these price points. As much as I wanted to feel like I should want them more than anything in life, the reality was much different. I liked some bodies; some fit me terrible and were very difficult to get around. I liked some necks; others not at all. I liked some voices- some are amazing in that they don't pitz at all, but the angels sing when you touch them with a bow. Others are in nice condition; some are literally a 250 year old eggshell with hundreds of repairs- I was afraid to touch it and even play it in a climate controlled room.
As such, I've never found one of those ancient old beasts that had all of the things I would want in order to feel like it was the one for me, regardless of my wallet. I have found that combination in many mid priced basses where everything worked exceptionally well for me and I could somehow justify the price if needed.
I've played lots of Lloyd Loars (approx. 30 total, with 1/3 that I liked) that excited me and worked great in every aspect! No matter what high dollar bass I buy, the reality will still be just me & two other bass nerds in the audience that notice.....I'd rather buy a 1937 D18 + a nice vintage muscle car....or move to Costa Rica for a decade!