Shows

Ok, this post is really just for my own help. I'm just doing some planning on what shows I should plan on attending. Being that I work with several technologies...I need to go to several. I'm planning on going to:

VoiceCon (November in SFO)
http://www.voicecon.com/

NRF Big Show (Jan in NYC)
http://events.nrf.com/annual09/public/enter.aspx

Digital Signage Expo (Feb in Vegas)
http://www.digitalsignageexpo.net/

But... as far as AV and VTC conference go. I'm not sure which one I want to go to. Sure NAB is a blast..but its just not worth it if you're in AV or VTC. (but it is a cool show). There is Interop...but VTC is just a small portion (and theres no AV).

So...curious... who's going to what shows? which ones do you think are the flubs? and which is the best to go to?

thanks!