Let me first say that, like the other reviewers, I am a beta-tester and have watched the ZeroVector grow from childhood through adolescence to maturity. It's an astounding soft-synth!
While I am not a sound-engineer in terms of pre-set design -nor am I a terribly technical person- I am a musician...and this is simply one of the most versatile, "musical" synths that I have had the pleasure to play. In my musical world, it has sat quite splendidly in a mixex and has been the crown-jewel in a couple of creations.
There is a rich sound to this VA-type synth which can result in pure aural ear-candy. The sound is clear, warm and profound. Probably one of the best soft-synths I have ever had the privilege to get my hands on. The availability of the Vector-Pad and XY-pad also give a lot of programmable depth and variance to a pre-set. (Actually, the Vector-Pad is programmable and automated whereas, I don't believe the XY-Pad is automated -though I wish it were - still in all, it's great). There are several different wave-forms to use in three different oscillators.
There are alot of pre-sets by several different parties, including the creator. They are wonderfully varied and also make excellent leaping-off points for those who want to take the sounds further. This synth can do alot and even I have found programming to be quite intuitive. I haven't quite mastered the envelope formatting - which is a bit different than other synths- but similar to other White Noise creations. This is my fault, not the synth's and can be attributed to late-night lazainess. I also don't believe that there's a MIDI-learn function, which I would love. This does not detract, however, from an incredibly useful product. I have immediately assigned it a place in my soft-synth pantheon.
In sum, I'm still getting to know this instrument but I know it well-enough to find it immensely useable and musical. It is definately a must-try.