What an amazing sound he produces! It's a shame the recording on the video was a bit dodgy on the top end, with a bit of distortion.
I'm surprised,even if just from a commercial aspect, Sax makers don't make more of the 'neck as an upgrade' route. I'm sure, at the highest level, the top pros will get a pick of necks to choose from, but for everyday hobbyists, a neck upgrade doesn't really seem to be pitched as a reasonably cost effective way to get more out of your horn, in the way a mouthpiece upgrade is.
Just imagine how easy it would be for Sax shops to confuse people like me into getting the latest neck upgrade to super power my playing! Maybe they do, but I don't seem to come across many players on here either upgrading or thinking of upgrading a neck.