Traded in my 2007 MDX for a 2009 Hyundai Genesis with the technology package. The 17-speaker Lexicon system will play DTS-CDs, DVD-Audio, andDVD-Video (in park only for the video, but the audio plays at all times). The sound is quite impressive--I had always found the separation to be quite good on the MDX but the sound itself was a bit too crisp and seemed to lack full range and body in comparison to the 2006 Acura RL I had driven previously. However, this new Genesis upgraded sound system is amazing--full and rich with an enveloping sound quality. The only thing I miss from the Acura is the ability to adjust center-speaker volume independent of all other speakers.
If Acura wouldn't intentionally disable audio playback from DVD-video discs, I might have gone with an Acura RL or TL instead.