Who has one, what brand is it, whats good/bad about it?

We have a regular baby monitor but DS is such a light sleeper and when we go and check on him he will often wake up, which is a real pain as we want to be able to check on him.

There is one on ebay which looks good but it says that it's on a 2.4ghz frequency and it may interfere with wireless etc. That would suck as we want to get a clear image and clear sound. Does anyone have any experience with one on that frequency?