What kind of radios are all the other folks in your area running?
That's the key feature, if you can't talk to them then your nice radio is a decoration.
Most folks seem to go with some variant of FRS/GMRS radio, maybe right out of the bubble from Radio Shack, or maybe a nicer programmable version.
Techseller on here has a great store for radios. Don't forget you're going to want a headset too. Something that will let you talk an listen without everyone within 100' also hearing where you are.
Airsoft, where nothing is hurt but feelings.