M.L.
We have one made by Summer Infant and it is about 2 years old. It is worth its weight in gold!!!! I thought it would be overkill, and my friend persuaded me to get it over the traditional monitor.
For example: Last night my 20 month old son woke up at both midnight and 2 am to complain. I can roll over, look at the monitor, he him rolling around (not stuck in the crib or trying to climb out) and go back to sleep. The incident is over in 2 minutes. If I had to go in there to check on him, it would drag out for at least 30 minutes.
Plus the noise is so sensitive that you can hear your infant breathing if you turn it up! That is worth a solid 2 hours of quick sleep!
Good luck and congratulations.