I learned from the Government back in my working days. we was servicing the radio/radar sites along with SPAWAR Charleston folks... They made us use the VERIZON network back then. Others would not work well for the off road places...
Here at the house we are in a small dip here in the neghborhood and SPRINT does not work inside the house... One of my daughters has sprint and she has found a spot on the front porch to use... She calls that her GREEN ACRES Hot spot... I suspect ATT is going to be a good one to use... They have come a long way now...
For us in our off road trips its VERIZON for sure and since I havent upgraded my GIBBS cell phone I use the Verizon MIFI units to do the internet aroud my camp site... MIFI gives me an secured connection for around 75 feet around my POPUP trailer using the MIFI box...
We only use the internet to check in with the kids, check the mail, pay a few bills on-line and some surfing of the net... I don't have enough GB's for downstreaming much of anything... My mifi was a 3GB unit and I just replaced with a 5GB unit... I thinking downstreaming movies and HDTV etc is around 1GB per hour of use... Something like that...
Roy Ken