As good as DTS can be (and it can be quite good), there are opportunities for even better. Both DVD-Audio and SACD tried to achieve that, as both are based on lossless compression. Unfortunately, both suffered an assortment of maladies (copy protection paranoia that prevented digital output for years, disastrously poor marketing, and the arrival of the iPod). It will be curious to see if Blu-ray brings about a resurgence of high resolution lossless audio - either stereo or multichannel. While we wait, though, I have a small assortment of DVD-A and SACD titles that I still enjoy...