This is as good as it gets to really test your system. There's some really outstanding Concerts on Blu-ray to let you know how much better the sound quality is with the newer Dolby and DTS formats. I've been buying them up like crazy but running out of product. If you really want to see how good some of these Blu-ray's sound try : Dave Mathews & Tim Reynolds "Live at Radio City", Chris Botti "Live in Boston", Pat Metheny "The Way Up-Live" or for those who like Jeff Beck "Live At Ronnie Scott's" you'll be blown away by the sound quality as well as the video quality. Blu-ray is not just for movies! If you have a decient Home Theater you'll fill your underpants when you listen and watch one of these, guaranteed! Current System used: Onkyo TX-SR906: runs low frequencies. Outlaw Audio: 750: High frequencies. OPPO BDP-83: Blu-ray combo player. Denon DVD-2930ci: DVD combo player. B&W Speakers: N-803 Main, HTM1 Center, SCM1 Surround. 2- Velodine SPL12 Sub's Panasonic TP-C58S1 Plasma 58" 1080p HDTV. Run through a Panamax 5400 power line conditioner.