I am looking into purchasing a harmony remote for my hr20. I have the hr20 and a dvd player. All audio is run through my Onkyo receiver. I don't think I have a very complicated system. I was wondering which model would best fit my needs. Iwas looking at the 880, the 720, and xbox 360 one. I looked at hat last one because it is laid out really well, and already has the yellow, blue, red and green buttons on it. Any help would be appreciated.