Quite happy to get one off eBay to save a bit if money but need a baby monitor that will work effectively over 4 floors. We live in a town house, baby nursery right at the top, I quite often work in the garage 4 1/2 floors away. Need up know he's ok when I put him down for a nap and Shen he wakes up! Currently running up and down 3 flights like a yoyo!