Disclaimer: I work with Brad Hicks and Xpo Press - the publishers and distributors of the Tucson EZ- Guide.
BUT - that being said - I feel that I have an unbiased outlook when people ask for a link to a guide to the shows in Tucson!
I will tell everyone to pick up a copy of the THE BIG GUIDE - because it has lots of great ads and coupons.
Both Guides offer a paid subscription so you can have a guide in-hand about 2 weeks prior to the event....
So why do I tend to promote the Tucson EZ-Guide prior to the event? because it has a website with ALL of the information from the printed guide and a download-able version of it's show guides - the big guide's site doesn't help much until you are at the event and have the guide in hand.
It is also a more convenient size to carry through the shows...
By the way - having trouble finding the big guide online? their new website is: http://www.tucsonshowguide.com/home
Tucson EZ Guide's two editions can be found at: http://www.xpopress.com/AZ-show-schedule.html