To be honest, I don't think it's a good idea to expect to use the cameras after they are done with their "baby monitor" role. Camera tech is advancing so quickly that even the best camera system of today will be basically obsolete in 5 years and you won't be able to give it away (if it still works). On top of that, camera and system prices have been steadily dropping for the last 10 years and will continue to do so.

I use this for a baby monitor:
http://www.amazon.com/Summer-Infant-...ASummer+Infant
I bought it 2 years ago and I have a camera in each of my kids' rooms. It works just perfectly for less than the price of a single high-quality security camera.

Just an opinion. Take it or leave it.