+1 ^ went last year as well.
Here's my take on it-
Pros:
-many vendors
-large SPS / zoa selection
-some of the hammer corals were priced to sell quick (I got 3 branching hammers, softball sized, with 4+ heads each for total cost of $100, and he threw in a blue mushroom colony)
-interesting new gadgets for reef controllers
-interested gadgets for pumps/sea swirls/ skimmers
-big clownfish selection
-free parking
Cons:
-limited overall fish selection which was disappointing
-price of some gadgets was high
Overall, it was something unique to see. Don't think I'll be going every year though. This is a once every 2-3 yr expo, IMO