My wife and I went to the WPSS and was overall very impressed with the show and seminars. Only a few minor complaints on the Seminars (stay on topic, or at least speak to the topic in the program that brought me there in the first place), and it's always good to use TFP to keep me "grounded" in the "Chlorine Purists" world...
As far as the show, some really cool neat stuff - including some simple things I would have never thought of.
The one I liked the most was a wireless auto-fill - put/connect the remote to your skimmer lid and hook up the base station at the fill line. Batteries are supposed to last a year. I like this - don't have to tear-up the deck! www.konalabs.com. Now, if I could just figure out how to drain my pool after all this rain we've been getting without getting wet.
Note to self - next pool I have built for me should have an auto-drain line.
Some other things that seemed interesting were some HFD add-ons (for existing 1 1/2 HP pumps and lower) in the $400-500 range (www.h2oflow.net), alternatives to DE (fiberclear), Some cool new twist to pool-nets and pool-brushes (although I still think I could design a better one) and a really nice replacement for skimmer lids (www.CasaNewport.com - wish I would have thought of these).
Also got to spend some time with the Pentair Intellixxx guys at their booth and they were very helpful. I'm also mad at the Jandy guys and let them know it - seems if I want to upgrade my RS Aqualink to support their new E-Pump, I need to basically switch out my whole control panel's circuit board for an exorbitant cost. IF I decide to go with a multi-speed automated pump, I've now half-a-mind to go the whole route and go Pentair - including the controller (which allows internet access/control of your pool - Jandy still doesn't, or they don't list it anywhere...).
But I'm amazed at how much marketing there was around phosphate removers, sequestrants, algaecides and the multiple different ways (other than Cl) to maintain your pool - such as new twists on Ozone, and mineral-based systems.