The GUI was clean and the overall workflow was very nice. Diversion's sound was very clean, bright - reminded me Sylenth (but with much more sound design possibilities). I also loved Osc Morph windows and Main morph which quickly offered lots of variation to existing presets. Since then, few software updates appeared so I assume, the synth is even better now.
I'd buy it but since I bought NI Kontakt, during black friday sale, my "hobby budget" is over :) But it may be not a bad idea, for you, Vst Cafe readers :) - Diversion is currently on sale - instead of 169 $, it costs now 89 $ (excl. VAT).
More info: Dmitry Sches - Diversion