Natalie Merchant's Tigerlilly is one of the few discs which really don't have any hi-res stereo track at all and completely rely on the 5.1 fold-down. I think the DVD-Video/VIDEOS_TS part contains a Dolby 2.0 version, but that's all.
"Fear of a Blank Planet" and "Loaded" quite definitely contain hi-res stereo tracks.
"Fear of a Blank Planet" and "Loaded" quite definitely contain hi-res stereo tracks.