The Graco iMonitor Vibe 2 Parent Monitor is a wonderful, essential product. Although it is pretty pricey, I needed something reliable, with a good reputation. I also needed a monitor with 2 parental units, which this product offers. This monitor is small, cute, and it has plenty of features. It vibrates, lights up, has different sensitivity levels that you can adjust it to. This monitor has fantastic transmission! The only concern that I had is that it may not be loud enough to be heard if you are busy doing something else, or not close enough to the parent unit. I wouldn't use this monitor on...