Here's my two cents:
We are big fans of the motorolas with 22 channels and 38 subchannels. With that many combinations, it's VERY unlikely someone else will be using your favorite. If it did happen, you won't have any problem finding one without anyone on it. With 4 trips to Disney using them, we have never had a problem.
Sometimes you can hear your party inside buildings, but occasionally you can't. Our last trip to Disney I was in space mountain talking to family inside the Contemporary. If you don't pick someone up, wait five minutes and try again.
We have huge parties - 16 to 25 and all the adults carry one. Much easier then dialing multiple phone numbers, you can talk to everyone at once with motorolas!
The mickey motorolas work the same as the others. My daughter brought the princess version last time and loved them. She picked up all our conversations and we had fun playing with the voices!
If you're going to buy them, buy some rechargeable ones, they're wonderful!
We use ours outside of Disney all the time - in malls when we want to split up, wal-mart same problem :lol: , following someone in another car, etc.
Have fun!