I bought a Logitech Harmony One Universal Remote Control, and I feel its advantages from day one. I have separate set of home entertainment systems in my family room and bedroom, each of which consists of several remote controls. I often have problem lo find the right one to control my system. After setting up the Harmony One, I can control all components of my home theater system, no matter it is an HD TV, or a DVD Player, or my audio system. With Harmony One, I never worry that I have to replace its battery while I need a remote control most. All in all, I like my Harmony One very much.
How many remotes is too many? In our house it was 5. The TV, the stereo, 2 tivo/hd receivers and the dvd player. We had tried several other - read cheaper - remotes over the past few months, all with the same results....horrible.
Logitech is expensive to be sure, but the headaches - the multiple units - the batteries are gone.
On the plus side. This unit does exactly as advertised. All electronic units are now handled by one slick, rechargeable, internet accessible unit with a cool display. Same size as a normal remote control. Fairly easy to set up. And once some of the minor issues (like having this remote read another remote control) are resolved it is perfect
On the down side....it is expensive. I mean almost $200 for a remote?? but... everyone is happy so it is a price worth paying.