A couple things...
First, the REDDI is going to be a keeper I think. Just playing through it for 10 minutes with the Webster into my Mackie and headphones - you can hear harmonic content there for sure that you don't get with other stuff. I have to do some serious head to head comparisons between it, the U5 and the RBI and see how they sit in the mix. But I think the REDDI is going to win. Which means the U5 (and possibly the RBI) are going to move. I also have a Sansamp RPM I've been hanging on to which gives a cool vintage type sound. But I might not need it.
Second, speaking of the Webster, now that I have my two new US XL builds (and the Coda I wasn't planning on), I am thinking now is the time for it to move. It's a very tough choice, but outside of the midrange control, I don't think it can offer me anything the 6XL can't. And I like the 18v better than the BQC. The Webster sounds fantastic and I have grown used to it over the last year, but it just doesn't make sense to keep it when I have these new builds sitting here.
Another reason to move it, I might....*might* have a build I want to do this year rather than next. I've been thinking about it for a while. It would basically be close to a US bolt-on version of the Rebop5-MM, so single MM, BEM board, black pearl inlays, and probably transparent black gloss. So yeah, the 5-string bolt-on MM version of the Black Pearl.

I'm tempted to get a TonePump in it rather than the OBP-3 since I liked how the Rebop version sounds. This would be kind of a Spector replacement for my trusty old black and maple SR5 H. I am a sucker for a black bass.
From what I can tell (Patrick or someone help me out), the bridge pickup on a dual MM NS bolt-on looks to be in about the same position as it would be on some of the single MM's I've seen. So I'm hoping that when I get my bolt-on fretless, I can solo the bridge pickup and get an idea of what it would sound like (minus frets of course

).
Or maybe I should pay some bills. Nah....