We bought these for our 5 year old daughter on her birthday because they seemed to be more robust and had better reviews than the kiddie character ones. Overall, they are very good. The coverage is excellent unless you need to cover a much greater distance than 50 to 100 metres. Each radio requires 3 AAA batteries and they don't last very long at all. The first set of batteries lasted less than 48 hours, so if you intend to use them a lot it could work out quite costly unless you have a charger and recharable batteries.
I would have expected with 8 channels to find one that isn't already in use by somebody else locally, but unfortunately it doesn't matter what channel we select, we always end up picking up somebody elses chatter.... and if we can hear them, the likelyhood is that they can hear us. I'm sure common sense should have told me this, but not everybody who uses these radios is an innocent five year old. We have on a few occasions picked up some appauling language that we would rather our children do not hear.