Thanks for all the replies.
1. Doesn't do any good to ask people in our area. We're in Alaska. Can't sign up for T-Mobile here. But, we'll be going on the road full-time soon and "our area" could be anywhere!
2. Interesting RE: tethering and Netflix. Spoke to a rep on their 800 number last month and was sure they said I could do both. Guess I'll do some more homework.
Coverage does seem to be a recurring theme.
Among other things, I'm definitely looking for the ability to tether computer and NOT break the bank for internet.
Hadn't seen the Sprint deal before. I'll check into it.