Have you used the Motorola Cliq 2 in the Houston area? If so I would like to hear about how is the data connectivity (and voice too). I am thinking that the live GPS with traffic might be useful in big metropolitan areas like Houston.
When it comes to data and voice, its not as much about the phone as it is about the service provider. What provider are you wanting to use? I know At&t and Verizon both work pretty well there. I have heard mixed reviews about T-Mobile and Sprint, and downright horrid reviews of Cricket.