I’ve had this instrument for over a year. Used it on at least 4 albums, and even made one or two of them using this box alone. I was going to sell it to replace the multiple things you can here for higher quality gear, but even now that I have that gear I will likely keep it, as it’s extremely handy.
Some Pro’s
It’s not even just a groovebox. One of my main uses is as a 4-channel multi-fx unit, with all the inputs and outputs and routing options available. It’s like having all of the BOSS stompboxes plus more, and then being able to switch between 16 variations of each using the clips.
Aside from that, the scatter implementation allows for very expressive performance, the synth architecture, whilst a bit archaic is very very broad/deep, and each clip has a maximum length longer than most hardware sequencers.
Roland have been killing it with the firmware updates, very responsive to the community, you get new features every few months.
Cons: Synth engine is very broad but not thaaaaaat good sounding, programming patches is a pain, polyphony maxes out quicker than expected. Limited clip rows (16), sampler memory too small.