Before throwing-down on the Harmony, be aware of the AR Xsight remotes that are coming out soon. They have the ability to work with the RF receiver in your HR20.

If the reviews are good, I plan to replace my Harmony 880 with one. I think the 880 is pretty poorly designed as Bruno mentioned. The keys are too hard and easily pressed by accident. I like my Harmony 720 with rubber keys a lot better, but I'm waiting to see what AR comes up with.