Trade Shows/Expos in the US for Web Products?

Hey. I'm looking to promote my CMS http://halogy.com and my Project Management software http://projectbubble.com at a trade show/expo in the US (ideally CA?). Can anyone make some recommendations for the best ones to go to? Cost of registration? Any tips (e.g. bring business cards and a laptop with a working version of the site... etc)? Thanks guys.