I have a about 6 BD titles in 7.1 DTS HD Master, DTS HR and 7.1 PCM audio They sound very good but the 7.1 titles are few and far between. One would think the uncompressed PCM is going to go the way of the Do Do bird. Requires too much space. For example a 3 hour movie would require approx 12Gb of space for 7.1 uncompressed PCM while the compression of True HD and DTS HD MA would only use half of that space and then let the player uncrompress it bit for bit idententical to the original track. But most people already know that right?