I didn't forget! Wanted to accumulate some gig and woodshed time with the thing, first.
Given that tone goals are personal and live stage mixes are variable, here's how it goes in the world according to me:
At home, woodshedding, I can easily get a tone that makes me smile with just the 800, and minimal knob tweaking. And I've happily been gigging the 800 for the better part of a year.
But I find the 800+ offers some advantages in a stage mix, at high volume. The variable HPF is a big help in taming a bottom end that's gotten too big. (Insert joke of choice there.) And a fun thing I've just started to play with is to bump the bass EQ just a bit, and raise the HPF filter to compensate. Gives a nice bit of muscle that way. Nothing new about the idea of going the opposite directions with two curve-shaping devices--I've long done that on my Sadowskys by bumping the treble EQ and rolling off the VTC, which adds a touch of upper mids--and on the 800+ that "space between the curves thing" works real nice on the low end.
The semi-para mids work great for fine tuning the growl on my JJ bass. I can get just enough grrrrrr to suit a moderately competitive stage mix without getting too much. Just like Goldilocks's porridge.