T-Mobile unlimited. My experience.

I have been using T-Mobile as my cell provider while driving 48 state solo. I'm on the unlimited account, it costs $150/month for 4 lines, or $90/mo for 1 line. LTE data is truly unlimited, with no hidden limits. I have been able to download movies via torrent without any throttling, using up to 80gb/mo when I have a lot of down time. The unlimited data plan comes with an extra 14gb/mo that can be shared via Wi-Fi hotspot. They also allow international calling/data in Canada and Mexico at no additional cost as well as international calling to many countries including Mexico and Canada, so if you ever find yourself driving out of the States, you will be covered, you can continue to use your cell service as usual without any additional steps, and you can keep in touch with friends, family, businesses when you, or they are outside the US.

Another thing worth mentioning are the "Music Freedom" and "Binge On" features, also included free with any plan that includes 10+GB of data. This allows you unlimited streaming music and video for services like Netflix and Pandora (check to make sure the services you use are on the list). This feature also carries over to your WiFi tethering so you can tether up to a smart TV and enjoy your unlimited Netflix on the big screen.

Finally, on plans that are not unlimited your data rolls over to the next month, up to 20GB can be in the stash and it carries over for up to 12 months.

On the downside, the coverage isn't the greatest, but it is constantly improving. So you may want to keep a Verizon phone around as a backup, and maybe a mobile hotspot, or pay the extra $10/mo to enable WiFi tethering with Verizon.

 

There are some areas where I don't get coverage, like most of Wyoming, and the more desolate areas of the country, like the Western desert areas. Coverage in eastern and central United States is excellent, even in rural areas. Overall I have been very happy with the service, customer support is great, I just love being on the unlimited plan so I don't ever have to be afraid of using my phone.