Clearaudio Innovation [Wood] vs Master Innovation

I have a Clearaudio Innovation and may have an opportunity to upgrade it to the Master Innovation (Clearaudio makes a field upgrade kit for those who aren't aware). 

I heard the Master Innovation at my dealer years ago and was really quite impressed but that was long before I had my current Innovation. Has anyone started with an Innovation and moved to the Master Innovation later, or had a chance to compare side by side? I am interested in opinions and experience with that, and what you observed the Master Innovation brings to the table [heh, pun not intended]. Thanks.