There are very few DTS-HD High Resolution titles out there - a search of Blu-ray.com turns up just one title with such a track ("Diary of the Dead"). In most cases, if it says DTS-HD it is Master Audio. I do agree, though, it would have been nice for DTS to find a better way to name the two formats. "DTS-HD Master Audio" and "DTS-HD High Resolution" are a pain to type out, and even the abbreviations (DTS-HD MA and DTS-HD HR) are still longer than "TrueHD" is.