I would say that you're probably wasting your time asking about zero jitter on VM. It's not going to be the most common thing though I'm sure the usual suspects will be doing their utmost to try and get a zero jitter test done, even if it takes 10 or more attempts.

---------- Post added at 16:45 ---------- Previous post was at 15:08 ----------
I'm fresh from a doubling of bandwidth upgrade for the area earlier in the week.