"Buy one today."4.0 starson by lstockett
Pros: price, ease of programming, compatibilty
Cons: No RF capability, Software ran a little slow
Summary: This product exceeded my expectations in almost every way.
It only took about 15 minutes to get it programmed so I could use it with my Denon AV receiver, DirecTV HD DVR, Panasonic Plasma, and cheapo $35 DVD player. Basically, everything just worked. After another 30 minutes of tweaking and generally playing around with advanced features I had it doing exactly what I wanted.
Compatibility is impressive. I assumed I'd need to go through some kind of painful "learning" process to get it to work with my cheapo Tru-Tec DVD player. But no, I entered the model number and it just worked. It can even control my iPod Touch via Apple's Universal dock. Functionality for that is limited to what the Apple remote could do, but I'm impressed that it can even do that.
I can't imagine a more intuitive design. It's almost as good as a user interface designed by Apple. I'm pretty sure that family members and other guests will finally be able to turn on the TV all by themselves instead of puzzling over four or 5 remotes.
It would be nice if it had RF capability. The setup utility ran a little slowly, even on my dual core laptop.
OTHER MODELS CONSIDERED -
I thought about buying the Logitech 670 instead because it looked more ergonomic in the pictures online. After I got to the store and played with both of them I was sold on the 550. It's slightly less expensive, looks and feels more solid, and has a better display. The button placements feel better to me too.