Mercer Barker MB5-ET vs Denis Wick 5ABL

Following on from my Mike Finn vs Denis Wick mouthpiece video a few months back, this is a comparison/review of my new Mercer Barker MB5-ET.
I got this mouthpiece late November, just in time for a 3 week run of Panto shows and rehearsals.
You may not notice much difference between yhe two mouthpieces but I can definitely feel the difference when playing. I will, at some point, fo a quick back to back video of the two for a better comparison.