You have to remember that NAMM is essentially a 'trade show', NOT a public access show, and as such, the demonstrators there are trying to sell to jaded music store owners that have seen every flash demo for every product for the last twenty years! 'Give me the important info, let me get on to the next booth' is often all a busy store owner can handle. Most of them are capable of telling the wheat from the chaff without a fancy tuxedo'ed OMB running down some dated chestnut standard.

It's the manufacturer WEBSITES that should be the final resting place of the high quality demo, IMO. As much vaporware and beta gets shown at NAMM, I rarely trust what I hear to be what I'm likely to buy. Maybe I'm just a patient guy (few of my friends will agree, mind you!), but I can usually wait until a keyboard is actually on the shelves before I need to hear a high quality demo.