Calling Merlin upgraders


I am a long time Merlin fan who has had most generations of the VSMs. I currently have the VSMMs and have been thinking about the newer VSMX speakers. I would love to hear what thoughts you have if you made this change. How big of a step is it from the VSMMs to the VMSX? What's your system, and what sonic differences do you hear.

Thanks
84audio
I am currently waiting (anxiously) for my new pair of VSM-MM (studio black). I have listened to 2 pairs of VSM-M and a pair of VSM-SE (with my own equipment, I might add) prior to placing my order. While I have not had an opportunity to listen to the MM or MX (premium finish designation), the new versions are said to be somewhere in the order of a full third more open, relaxed, natural, detailed, and spacious than the VSM-M. From what I heard from the VSM-M, I would be flattened in my chair with the newest version, and I CAN'T wait!
Just my 2c. Hope it helps.
I have the VSM-ms now, and am interested in hearing from owners of the VSM-x. There was a huge improvement from the SE's to the M's, and I'm sure the upgrade from the M's to the X is also significant, but it would be great to get some real world feedback from users.
I don't own these speakers but a friend does and I go to his home often for critical listening sessions. He sent his off for the upgrade and recieved them back around the first of the year. Out of the box they were superior. After about a 300 hour break-in the difference was staggering. IMO they deserve the long anticipated subwoofers. What's up with this delay?