my little review:

The analog filters sound great, though their custom use is somewhat limited. I highly recommend using the app to fine tune the various filter cutoff freqs per preset. They’re set a bit low by default on many presets.
Having LP/Tape/Comb options, plus sweep on all three, and easily navigable gives it a vast tonal capability.

Freeze/Jump are exciting and worth the remote footswitch cost. Toggling Reverse with one button is fun between engage commands. And the trails/listen options are a nice touch for special fx.

The Mix knob is a little weird in behavior, turning it all the way to the right doesn’t go full wet and remove the input signal from the mix. For that you have to use the “dry kill” function. I understand why this is the case, for guitarists, but it will take some getting use to for my uses.
It’s really more of a Delay volume knob.

the Halo effect isn’t as compelling as I thought it would be. I’m sure a nice reverb next in the chain would bring it to life.

The USB jack, I can see why they’re promoting the Ultra Pro as having an improved jack. Took a lot of work getting the cable in there and recognized by my Mac. You definitely need to remove the little rubber shoe to do so. Fortunately, it’s a feature I’ll rarely use. The other feature update that the Ultra Pro brings is a 2 digit preset LED.
The Deluxe, instead, uses the 5 LFO leds to tell you which Bank you are navigating to, and that works just fine. I see no real benefit in the Ultra Pro other than the fact that it drove down the used prices on the Deluxe.

Casing and knobs are built like a tank, just like all the other Pigtronix offerings.

Great midi capabilities and implementation, just like their Infinity Looper.

It’s quite unique. Not much else like it, and perhaps not for everyone. Really looking forward to the added dimension this will give my live sets.