We use the Verizon MIFI unit. Ours is older and grandfathered but gives us a 3GB dataplan for around $27 a month. This is plenty of data for us to check in with the kids, pay our online bills, and do some searching on the internet.
The current Verizon MIFI plan is a 5GB Dataplan for around $60 a omnth I think it is...
The stand alone MIFI units will provide a WIFI HOTSPOT for up to five of your wifi ready devices and is secure.
If you want to get into downstreaming alot of data then the MILLENICOM 20GB dataplan would be a good setup. It uses the same verizon Network...
Kinda neat to slip the MIFI unit in your shirt pocket and grab a beach chair and head down to the ocean if you like. You bring your WIFI HOTSPOT with you and it doesnt tie up your cellphone...
Roy ken