What does really define the best baby monitor in commerce? It is certainly hard to say, but not impossible. Before digging functions and features, pay attention to the common types – digital and analog. Digital monitors are way safer and better because they reduce interference. Also, they protect your privacy, so neighbors will not pick up your discussions. They are more expensive too. However, if the area is densely populated, the extra price is certainly worth the value. On the other hand, if you live in a rural area or there is plenty of space between you and your neighbors, a cheap monitor will do the trick.