Caught the 650 onsale for only $40, so I thought I would give it a shot. I was concerned that it would not be useful in controlling my old JVC AV receiver from 1998. I was wrong! The myharmony setup was easy and had all of my devices in the library - JVC RX-V744, Panasonic TCP-54V10, Oppo BDP-93, Apple TVg3, and Scientific Atlanta Explorer 8300HD DVR box. Being that my old JVC does not have HDMI, the connections for my devices are little odd. Using the myharmony Activites setup for Watch TV, Watch Movie, Watch Apple TV, Listen to Music, and Custom activity works great! The interface was friendly and very intuitive. And knowing I can customize the button functions for each device is great. Although it only allows for 5 devices, thats perfect for me because thats all I have. Very pleased so far. Definitely recommend the Harmony 650!