Here are a few either in Mesa or in close proximity:
Famous Dave's BBQ
Tom's BBQ
Waldo's
Andrew's BBQ
That's just off the top of my Head, I'm sure our members will post others. Make sure where ever you stop, you tell them you are an AZBarbeque member. Always trying to get our name out there to the BBQ Restaurants for exposure.
Also, since you are up in the Mesa area now, let us know when you plan on doing lunch at one of these places and if we can, we will join you.