Took the prima and the Z to rehearsal tonight. After getting over the fact that I had well north of $15k in Dingwalls strapped to my back, I setup. We rehearse in a recording studio, so, I just use whatever amp happens to be in the room that day -- I don't even take my Axe-Fx II or AX8. It was some SWR amp and cab. I'm not familiar either with either to know which head or cab, and the markings we well worn off to get a model name/number from it. Oh well. Set every EQ knob pointing North (and hope that's reasonably "flat"), dial up the gain and master, and started playing.
First time through the set list, picked up the Z. The new shiny. I quickly realized... I have no idea what the 4-way rotary does, since I didn't bother to look before leaving. No biggie... a few turns back and forth on it and, well, it doesn't matter which pickup is hot, just what tone I'm hearing. I couldn't find a bad setting. Kept the amp set "flat" and did all adjusting on the fly from the glock and S/P toggles.
Second time through, put the Z down and pick up the Prima. This is home. I've been playing this bass for a year and a half for everything, so I didn't need to fiddle or "figure out" anything, so, it had a bit of an advantage because of that. Again, not a single bad tone at all.
After the 2nd run through, had some time to just noodle. Flipped back and forth between the two in quick succession. I ended up making this kind of Venn Diagram in my head. There's this middle area where both basses have surprisingly similar tones, but, then there are these other worlds that are far apart, and each does its own thing. For this, I'm super happy -- it means I can pick either one up and get to that center, if needed. But, I'm already starting to build slight preferences between the two.
At the end of rehearsal, I found myself still emotionally leaning towards the Prima as my "main" and "go to". I find myself liking it's overall tone a bit more than the Z, for this project. It may have been "new bass syndrome", but, I found my playing on the first run with the Z, better than the run with the Prima.
All in all though, just, wow. These basses are incredible. I look forward to spending more time with the Z to really give it a work over and start getting more comfortable and familiar with it.