My husband researched every monitors out on the market before our baby was born. We were impressed with the promises of no interference and no static. This monitor did not let us down in regards to those promises. Sound/Video Clarity Probably the thing I love the most about this is the lack of static my sisters-in-laws baby monitor is always on (lots of static). Anytime I visit her it drive me nuts. This monitor is quite unless noise is being made from the other end. Interference We have experienced no interference from any other devices, this was the main reason we purchased this unit. Durability This is where I am really disappointed. I was hoping to use this for my next baby but after 3 years the parent unit has lost its mind. It no longer turns off when you ask it to, you have to take out the battery if you want it off. It does not hold a charge well so it basically has to stay plugged in the whole day. Now I know 3 years is a long time but I feel like it should have lasted longer. Portability The parent unit is easy enough to carry around. This only thing I am not crazy about is that the clip that holds is on is not the best, it falls off very easily.