Because the Nest Cam relies on an internet connection, it can fail if your internet is not reliable. So, if you'll experience sleepless nights worrying about connectivity or your internet connection, then you'll want to consider a dedicated option that works without the internet. However, if you have a large house, you could be restricted to Wi-Fi options only due to range limitations of dedicated products. For families looking for a product they can use for years to come that allows them to see little ones from outside the home, it is hard to beat this versatile camera and everything it brings to the table.
Most people don't have unlimited data plans for their smart phone, and are surprised to see very high data usage after just a few hours of streaming their wifi baby monitor. With HD video, you can go through a couple gigabytes of data in just a few hours, so keep that in mind. If your phone is connected to wifi that won't matter, but if you're using 3G or 4G LTE cellular service, you will definitely have slow video and tons of data usage.
It really depends on what you feel most comfortable with. There are audio monitors that allow you to listen to any noise coming from the nursery, vital monitors that track sleep and breathing and video monitors that add sight to sound. Babylist parents overwhelmingly choose video monitors. The security of seeing what your child is up to—like if they’ve gotten tangled in their swaddle, pulled their diaper off or climbed out of the crib—can be worth the extra cost of a video monitor.