Thanks Edmund. Good point about used remotes. I definitely need the RF capabilities so I will try to find one that's new(ish). Interesting about the "play" key. I also have an Rf20 remote and the Play key is on the bottom. I admit I prefer it on top, but if that's the only difference (besides loss of the global M1/M2/M3 keys) I'll take it. My next task is to confirm, before purchasing an MX-800, that it will actually work with my X1 Set Top Box for which I was provided an XR11 remote. The .MXD file I found on this site is 4 years old and confirmed to work with the XR2; I am not sure if the XR11 uses the same device code 195. I started a new thread to pose that question.