I've had the Aftershock for 10 days now and I'm learning more about it every time I fire it up. After the initial euphoria I had a few hours messing about with the PC editor - the damned thing just annoyed me, a lot. I found this editor to be a pain in the @rse. Somebody correct me if I'm wrong, but I don't think the Neuro app and the PC editor can talk to each other. Maybe I missed something here though. I'm sticking with the Neuro app now. I have the Aftershock (and a Lunar phaser, which does phase/chorus/flange) hooked up to a Neuro Hub and a One Control Gecko Mk2 (MIDI switcher), with my expression pedal plugged into the Neuro Hub.
The way it's working best for me is to use the app to tweak a sound, burn it to one of the presets on the pedal, then save it as a preset on the Hub & Gecko. Then I can tweak the relevant Aftershock knob to find the min & max levels for whatever parameter I want to control with the expression pedal, and get that added into the Hub & Gecko patches. Once I got going it didn't take long to get all this done really fast and what initially seemed to be a time consuming task is now pretty easy. On the Aftershock I'm using my exp pedal for volume, treble & blend duties. I haven't yet used it for mid boosts, wet levels and the various other parameters the app lets you assign to two of the knobs on the front of the pedal. All in good time.
When I save patches on the Hub & Gecko I'm saving sounds on both the Aftershock and the Lunar (the same process apples to both pedals). At the moment I'm not planning on using them both at the same time and they're in different signal paths on my board, but for each MIDI preset I create I now have two pedals programmed with sounds and exp pedal settings. Sweet.
I quickly realised that the Aftershock will never challenge my favourite dirt pedals, they are just too good, and they aren't going anywhere in a hurry. But with MIDI switching the Aftershock can do a whole lot of other dirt sounds (including parallel distortions, very cool!) clean/dirty boost, EQ changes, the list goes on. It's really versatile. You just have to put the time in to get to know it. For what it's worth, I liked the B3K model although it's been a while since I last played one myself so someone else can have the final word on that.
If you buy an Aftershock just for the 3 factory sounds you won't be disappointed, they're worth the asking price alone. If you are into lots of tweaking then this pedal with the app/editor might also suit you, the hours literally fly by though, be warned.