Hey Gang, I purchased a Sony 555ES last month and have been eagerly snatching up SACD disks. The format has rejuvenated my love of music. This weekend however I also grabbed Nightfly by Donald Fagen and Fragile by Yes, both DVD-A's as these were great CD's and I was intrigued at the newly remastered versions. My DVD player is not set up to read DVD-A's. I have been playing the DTS and DD layers and have been very impressed with the sound. My question then is what am I missing sound quality wise by not being able to play the actual advanced resolution layers? Have any of you compared the various formats on these particular disks? Bottom line though.....thank God for both SACD and DVD-A. I haven't watched a DVD in a while now since the 555ES purchase because listening to music is such a blast again.