Has anyone compared Synergistic XOT and XOT Carbon transducers?

I called the dealer where I purchased the original XOT and he didn't think it was worth the upgrade which I found surprising. He wanted to know my current equipment and thought it might make a very small improvement since the older model pretty much does the same type of noise filtering. I appreciate his honesty and opinion but I guess like any tweaks it comes down to the quality and the synergy with the equipment.

I did upgrade from the older XOT to the newer carbon and there was a slight increase in sound for the better.  Not huge just sightly noticeable.

Pete, looks like your results are exactly what the dealer stated. I also called Synergistic and they suggested I try the Migs 2.0 in lieu of upgrading to the newer carbon XOT. So I received the Migs today and plan to do an extensive review with various genres of music and types of recordings.

XOT Carbon is far better than XOT. My opinion. 

I wonder how my new $125 Music Purifiers compare to the latest XOT Carbon? The first suitable person that has an XOT Carbon and contacts me through my website email will get a pair to keep free if they compare and comment. tweakaudio dot com......