I have Sprint and use their Airave at home. The model I have older model only does voice and data is through wifi. If you go with the Verizon one check if it does data. Many users from Sprint including myself received the Airave for free and the 4.99 monthly service for free. Been with them for sometime and Nextel before. They offer them free for customers in bad coverage areas to retain them as a customer.
Goto Howardforums or a non Verizon cell forum and ask if anyone received it free and how they did it.
The Airave does not cover the distance they specify in the sales speech, after getting to a tier 3 tech they were able to increase the power so it works just outside of the house. Most anywhere inside is perfect coverage.
Another option that requires some installation is a Wilson BDA. This places an antenna on your roof and a patch antenna inside your house, usually a few of them depending on the house size. The antennas plug into an amplifier.
http://www.wilsonelectronics.com////Products.php?Type=B I am putting one in my vehicle next month. A friend installs them for USFS and local rural agencies in Arizona & they swear by them. He has installed them in houses with good results. The difference in a vehicle is service cutting out, no coverage to reliable coverage. This depends on area and how well the cell sites perform. This is a similar setup as the home setup. Antenna on the roof of the vehicle (mag mount or permanent mount) this runs to the amplifier usually under the seat. An internal antenna which is about 1"x4" and placed in the headliner for best results. Power in the new models is a cigarette lighter with an on off switch. I am hard wiring it with a timer and on/off switch inline. When turned on it will run for 5/10 minutes after the vehicle is off.
http://www.wilsonelectronics.com//ViewProduct.php?ID=6The vehicle version using the mag mount and cigarette lighter for power is an easy install..plug and play. You might have to remove the seat to bolt it down.
They are available in single band covering the band you want: CDMA (Verizon, Sprint), GSM (At&T), Nextel. Dual band or Tri band.
The Wilson BDA's are designed not to interfere with cell sites when in a metro area, they can. If you install one in your vehicle its best to shut it off when traveling through a metro area with good cell coverage.
Dont confuse the Wilsons with the antennas sold on Ebay, these actually work since an amp in inline.