I will primarily use my radioindoors. UHF radios are best for indoor use because UHF signals penetrate wood and concrete better.
I will primarily use my radiooutdoors. VHF radios are best for outdoor use because VHF signals travel farther in open unobstructed areas.
I will use my radioboth indoors and outdoors. UHF radios are best for all-around use. It provides a "happy medium" in the trade-off between distance outside, and avoiding "dead spots" when indoors.