I attended one in Vegas in 2003 or 2004(?)
It really was interesting and informative.
Unless you really want to go to Las Vegas, and don't mind the cost to do so, I suggest you wait until one comes closer to where you live.
The shows alternate between locations. ElectricShow West, for instance alternates between Las Vegas NV, Los Angeles, Anaheim, and Long Beach CA in consecutive years.
Don't they have an ElectricShow East?