I've just been at this long enough to know all I really need is a bass that feels right (overall weight, a shape that doesn't fight me, a neck that feels right), good keys and bridge so I'm not constantly fighting tuning, stability in construction where it holds a setup for a reasonable length of time, and electronics that are quiet and has a basic identity tone I can use.
I find these are not price dependent, and available in a lot of very different axes from around the world. Then give me an amp that also falls into the above mindset, and I'm good to go.
After that, it's all up to me, and in any combination of the things listed above, I'll sound like me.
This frees a lot of mental real estate after so many years of 'geez, if I don't get a _____________bass and play it through a _____________amp, I'll just be screwed and useless'. As I look back, I realize this came about because there was so much junk around when I started out, equipment-wise, and I swore I'd steer clear of it. But I never let go as things improved. The many great and easily available choices we have today were a crazy dream in the 70's.
It was so pointless to waste so many years under that spell, and I hate it took me so long to walk out from under it and enjoy playing, not killing myself to attain a profile as a 'serious musician via serious equipment'.
I was just TOO serious to enjoy it. These days, the only GAS I need is at Chevron or Shell. Good Riddance.