I bought this module for its varied frequency curves and twin peaks for interesting sound manipulation.
Despite being flexible it doesn't trade off in sound - it sounds amasing and can also be set up to produce more generic frequency curves.
I was particularly impressed with what can be achieved by putting it into self oscillation. By feeding it V-OCT signals you can play stable melodies and even make harmonies with the twin peaks by adjusting the span control.
If that wasn't enough the overall character can also be changed by using the TITO switch. In the neutral position it gives you a clean response, up position gives self modulating growly tones and lastly toggle down for cross modulated warbly sounds - great for drums or bass for example.
Build quality is top notch and when unboxed the module it comes protected in a bubble wrap sleeve with a Xaoc sticker, 4x mounting screws and a clearly written manual.
I couldn't be happier - highly recommended.