You probably want one with SAME, which can block messages that don't pertain to your county. The broadcast stations are much bigger than a county, and can wake you up in the middle of the night for a thunderstorm over 100 miles away. Won't be much good to you after you turn it off.

I've got this oregon scientific model now. It sucks less than the Midland I had before, I don't have to read the manual every time I pick it up.