What kinds of radios are players using? The radio thread lists the type they are using, but I'm asking what players have. There are a lot of features that only work if others have them. What kind of range? Privacy keys? Channels? I haven't used walkie-talkies in over 30 years, so I am sure the technology has come a long ways.

Mine:

www.amazon.com

I've got one of these little buggers... had to order a compatible headset, they didn't sell them one in the store I picked it up in (Walmart). Cobra Microtalk Radio

I have a couple of "universal" headsets, but it seems like most walkie talkies use proprietary jacks that are only compatible with certain headsets (though I may be mistaken).