I have had a WR100 for several months, and do NOT care for it. I replaced a RadioShack unit that worked faithfully for years til it gave up the ghost. Both had SAME, and worked, HOWEVER-- the WR100, when it "goes off" stays "OPEN" for a fixed amount of time, i think its 8 minutes, unless you are nearby to physically reset it. The RS unit reset (muted) itself as soon as NOAA transmitted the end of message signal, so all you heard was the actual message of interest. With the Midland, it drones on and on until the time expires. (I know, I know... but trust me, for a variety of reasons, it isn't always convenient to get to the radio and hit the reset.)
My two cents worth.