I am afraid that the price penalty in using Wersi or Mediastation to trigger VST's is what is primarily keeping me away from them. I thought my G70 and the T2 were expensive enough, but here are instruments that easily double or triple that financial burden. Add to that the virtual impossibility of affording a spare if these rare instruments go bad on you (Wersi is a proven road-horse, but only time will tell if Mediastation's build quality is up to the price they ask) and you are seriously jeopardizing your career if you put your gig in their hands.

Essentially, you are paying 8-10 grand for something that a good laptop can do in conjunction with the arranger you already have, and gambling that technology doesn't leapfrog it before it has payed it's way.

I use VST's extensively for studio work (I would rather use Ivory than the studio's Steinway where I work at!), but I think that I may have another two or three year's wait before the all software keyboard isn't a 'work in progress' and finally lives up to the promise we all know it holds.