Don't know the VRs at all, but have owned VSMs for app 10yrs. Originally they were late manufacture SE, subsequently upgraded to "near current" status (incl. super BAM) app. 2 years ago. The biggest change is a (slight, but definitely noticeable) increase in energy below 100 or 150 hz. Overall balance is a bit warmer and fuller. IMHO, the new version will sound better than the SE to most folks - in all but the smallest rooms. I don't have enough experience with the intermediate iterations of the VSM to offer any opinion on those.
Good Luck
Marty
Good Luck
Marty