Sound: Overall the synth responds in a very balanced and rewarding way. It really sounds like nothing else, it's got a nice arp, built-in sequencers, and some pretty good internal effects.
UI: The interface opens in a seperate window from the host which totally interrupts a quick workflow, but it saves everything with your song with NO problems in my experience, which many synths that open in a seperate window dont do, some other synth will even freeze your host when you try saving and make you lose work! The actual interface of the synth is top notch tho, minus a few quirks like patch selection.
Performance: CPU use is very acceptable, and good, but not as great as some people would have you believe with polyphony and release times.
Automation: Works fine with controller boxes or using cubase CC's or event editors. However, parameter automation from the front panel, IS NOT implemented yet. This is probobly the biggest drawback of this synth for those who do a lot of automation from the actual synth interface. I realize the idea of this is to make for more flexible assignment when using CC's but it basically gives you no choice, and CC stuff is a pain to set up, and impossible in say orion, where when you hit midi learn on a VAZ synth parameter, you cant even get back to orion's main window to draw in some data, you have to draw it in, and THEN it will learn it. And with graphic drawing you lose "realtime control".