I had one for about 2 years. Didn’t really gel with it, and it didn’t compliment the Monomachine I had very well. IMO, it’s sound is too hard (and yes, I did lower the oscillator volumes), but I do understand that for other people it might be exactly what they need.
Now I have the A4 and it absolutely destroys the XS in every possible way. 4 tracks, FX and sequencer for the same price? I’d choose the A4 any day of the week.