Short, Medium Long range equipment can be translated into handhelds, vehicle mounted, fixed radio.
Many variables attribute the capacity of the system. Effective range based on propagation, antenna height, RF power, terrain features both man-made and naturally occurring.
A handheld transmitter with an interchangable antenna, hooked up to a rolled up "j pole" hung 30' over you will perform better than the "rubber duck" antenna of a fixed antenna found on FRS (talkabout ®) radios. So don't buy those?? Not at all, FRS radios are great for in close proximity work such as a security perimeter patrol (dependant on size of the perimeter) or any time two or more people are not going to be separated by more than the effective range and the radios in play.
What advantage do FRS low power, short range radios have over a higher power radio, for starters security. Because they are limited range their signals don't broadcast your location, or comms out very far, making them unlikely to be intercepted by anyone outside of the immediate area!
The focus of the groups or individual Communications plan should be broad enough to complete the mission of the group. If that mission requires constantly reliable comms out to 100-500 miles, or require a 15 mile radius, or a 1/2 mile range, that is what selects the radio or comm you need.