It has been a tough transition to HD from my old system and I had to do it one component at a time. I started with a Samsung 51" plasma (pn51d550). I use the TV to switch inputs and the optical audio out to feed the HT-D5500. The tv audio output is only simulated 5.1, but that is satisfactory for my PS3 and HD Direct TV. I could not be happier with this system, it integrated with my setup seamlessly. The TV and Blu Ray communicate with each other so I never have to switch sources on the blu ray player, it just follows what the TV does. Even when I turn the volume up on my directv remote it turns up the volume on my blu ray player (the remote controls the tv, which the blu ray communicates with). Overall, I could no be happier with the system as a whole. Perfect integration, great sound, clean sleek look, easy to use, tons of features.