Hi,
I know of two people who have had very good results with VST. One of the two is the VST originator -- Dirk Baur of Medialas. The second is Kelly Sticksel of Magic Fire Laser Shows in Texas. Rob DiAddezio also had pretty good results when working with LSDI on the ILDA Awards opening in 2002. I am hoping that one of these guys will give you some good feedback, either through private email or preferably in public on this forum.
Bill