Summary: First and foremost, this unit sounds very good! In the week that I have had it, I have had no problems. Changing between Dolby modes, DTS modes, and the many, many other modes is simple. The manual is quite thorough and has not yet left me with an unanswered question. The manual can be downloaded online, which I did to help make my purchase decision. The onscreen display is very nice, but don't expect beautiful graphics onscreen.