Model: Solarcon A99
Model: Maco V58
Model: Solarcon MAXOPTIMIZER
Model: Walcott Radio PT3
Model: Maco BA1
Model: Maco V-QUAD
Model: Maco Y-QUAD
Model: Maco M103
Model: Maco V-5000
Model: Firestik IBA5
Model: Solarcon GPK1
Model: Solarcon A-99CK
Model: Solarcon IMAXGPK
Model: Firestik FS99-W
Model: Walcott Radio PT99
Model: Package Bundle PT99-B1
Model: Walcott Radio PCGPK-1
Model: Walcott Radio PT99PCGPK-1
The best omni-directional base station antenna is currently the Solarcon Imax 2000 due it's improved dB gain and 24' height. However, the most commonly bought and used base antennas (including on our own building) are a tie between the Antron A99 and the Proton PT99 both of which are around 18 feet tall.
Roof mounting is preferred as it gets your antenna mounted as high as possible. If you have access, mounting your antenna to a tower would be even better - but finding someone to purchase and install a tower can be a difficult process.
Yes, although it's not easy. Mobile antennas are only 1/2 of an antenna system. The other half is the vehicle itself. If you want to use a mobile antenna at home, you need to construct a reflective counterpoise. This can be a difficult process if you are not familiar with antenna theory, so in general, we strongly suggest against using mobile antennas at home. If you know how to build an antenna, you probably aren't asking this question to begin with. If you don't know how to build an antenna, we suggest sticking with base antennas that are already designed for at home use.