Very mixed feelings about this module. It does sound great, has simple controls and produces interesting results without any complex patching. It's relatively compact and has a built-in low-pass and high-pass filter and a reverb. (But you don't get a send/return loop to use your own effects.) If you don't want to think about what exactly it does and just want something that will add interesting rhythmic patterns, a bit of spatial depth and timbral richness to any audio signal, then this module is perfect for you.
But it is practically useless for any precise rhythmic synchronization. It basically just does whatever it wants in regard to the timing. And its behavior can even change after reboot. Sometimes the repeats drift apart from the input clock, sometimes the output clock drifts, and sometimes all of them are out of sync. And even when everything seems to stay synchronized for a while, the hold functionality never fails to disappoint. It is just completely out of sync and changing the loop offset also seemingly just does almost random things to the loop. I can understand some people enjoying that chaotic nature of this module that allows for some "happy accidents", but if you're like me and like to understand what exactly is happening and want to have some rhythmic consistency, you're gonna hate this module for anything else besides ambient stuff or the Karplus-Strong synth voice (which actually sounds pretty great with the built-in filter and reverb). Even the fully analog Maths module by the same manufacturer is better at timekeeping and creating precise clock divisions than this digital module. I've tried to contact Make Noise support and they've confirmed that this is in fact how the module is supposed to behave. Precise timing is just not a priority of the module according to them.
The only way to manipulate the two separate delay lines is the skew and ping pong functionality, both of which are quite limited. It feels like a bit of a waste, having two separate delays while not being able to do anything specific and just hoping that the skew function will do its magic.
The rate knob has a 1:1 position at about 12:30 for some reason and it's never easy to find. The zones are a pretty good feature. It allows for quick multiplication and division of the rate which works surprisingly well compared to the other timing features. The dry/wet mix knob has a special functionality when the repeats are fully counterclockwise - it erases the whole buffer. It's a very useful feature, but it does mean that you can't get a fully dry signal without losing the whole recording unless you increase the repeats before turning the mix knob. But it kinda sounds to me like you don't get a fully clean dry signal anyway.
This module is amazing and terrible at the same time. But for many people, the timing doesn't seem to be an issue, so I guess I'm in the minority of people who feel this way.