I checked out T-Mobile and Roam Mobility and I plan on using T-Mobility for a couple reasons. Those being:
I will be driving to Arizona thru North Dakota, South Dakota, Nebraska, etc and while Roam Mobility (RM) uses T-Mobile's tower network, RM does not get to use T-Mobile's Service Partners. T-Mobile's website sucks, so I phoned them up and spoke with a great guy in customer service. He advised me that voice and text should work quite well on the majority of my route, even though I will be "roaming" with their service partners a decent portion of the time. RM, while using T-Mobile's towers, does not get the service partner "roaming", so I would be out of service in many rural areas.
Another reason is that RM will cost me $90 for 30 days of unlimited text, talk, and data. T-Mobile will cost me $50 for unlimited talk, text, and 500mb data. I realize that RM offers unlimited long distance, but I do not expect to call much, if at all. And data usage should be minimal too, as I have free Wi-Fi at my accommodations.
If I'm wrong in those above statements, please correct me.
So when I'm down there, can I just change back to my Manitoba SIM every so often to allow texts to come thru to my MB number?