Peak : Unique sound, flexible synth engine

I bought it because I liked the sound, which is, of course, a matter of individual taste. Other than that, the synthesizer is solidly built and very accessible via physical pegs or through MIDI. Has bugs, but only a few, compared to certain other synths (that's why I gave four stars for quality) yet the firmware, as of today, is still being updated. My biggest concern was MIDI transmission errors, but I changed the USB cable and updated the firmware, and for whatever reason, they seem to be gone. That said, a lot of small details in the firmware are reasonable, like the key tracking which takes portamento into account. The analog nature of the filter causes small differences between voices, especially in the case of more extreme settings, but it adds to the color. The filter's self-oscillation, in turn, together with frequency tracking, can act as the fourth oscillator. I use it for "windy" patches. The specs listed on this page are a bit out-of-date: the current firmware features two matrices and four LFOs.