I have "my bass", and then another bass (or two) which I can swap to try out all the things I want to try out. I've mostly tried everything I want to now. Recently I sold a bass I wasn't playing much and with the money picked up a bass (L1000) that I wanted to try. I had tried one out for 5 min while buying a acoustic guitar years and years ago and it had stuck in my mind based on the way it sounded and felt. It's now probably my number one... along with the old one.
So I'm not moving anything on to try new things any more. TBH the "I want to try one of these" left on my list are all more money that I care enough about trying them out. Back a few years back when it was free to stick sale posts up I probably would have floated some of my current ones, but it's too much effort, just want to play the things!