John Andersen is the acknowledged master I our group so he will probably join in.
We use a Verizon MiFi with a truly unlimited prepaid plan Got lucky, John told all of us about it a couple years ago and it was only available for a few months. Along with that, we have unlimited on both phones and both iPads and can use them as hotspots if needed. Wilson Engineering WeBoost for signal boosting. I also have a WiFi booster but seldom use it as crappywifi is still crappy WiFi even if boosted.
Vaughan & Tracy 2013 RW 36RL, 2013 F350 DRW CC, 2016 Focus. MorRyde IS, MorRyde pinbox, disc brakes, Comfort Ride Hitch. "Life is to be embraced, Grab it with both arms ! "