I just wanted to point out that you're responding to a thread that has been idle for over 2 years. The vixen 3.1 that is out there today is a very different beast than it was when the other comments were posted in this thread back in 2012. In my opinion it's now probably the fastest and easiest sequencer to use. There is a bit of relearning involved if you're used to the older sequencers. But if you approach it as a new program with a new paradigm, and not as an upgrade to an older system, you'll be just fine.
You do have a member of the vixen 3 team right here in the Chicago area. Don't hesitate to contact me if you need help.

--Jon Chuchla--

Sent from my iPhone using Tapatalk