Breathing monitor

In search of a good breathing monitor. This is 3rd baby and never needed one but im on a medication that can cause respiratory issues for the first month or 2 of life and it's one of my biggest fears even still with a 3 year old and 18 month old. Babies do room share first 6 months. Im willing to pay a premium for piece of mind...I just want the best and most reliable.

So...what have you used with success? Anything you'd stay away from? I've looked online but still can't decide 😕