54, mostly and the 20.x series is a close 2nd. Those are some versatile remotes thbat you can program to run almost anything, including setting the default volume/mute buttons for an Audio device, just like you can on a Hopper or Wally. You can lock the remote to a particular channel and lock it form changing inputs and if your Hopper remote stops working, you can grab a 20 remote, make sure it's set to channel 1 and it'll run a Hopper without having to manually pair it