I've had one for years and love it. If you're thinking about it, you might want to move fast. I noticed today that the individual (replacement) receiver has been discontinued, so the kit (transmitter and receiver) probably doesn't have much time left.
On a related note, if you have a newer garage door opener by Liftmaster, Chamberlain or Craftsman AssureLink, you'll notice that your HD receiver doesn't work with it. There is an interface module available that makes the HD receiver work with the newer openers. Google Creative Access Solutions