My DVD player is also capable of outputting DD and DTS through the analog outputs, but I use the digital connection for movies. In my case, the reasons are (1) bass management (which may be part of why you hear a difference between the 2900 and the 950, and is probably the biggest reason to use the 950 for your decoding) and (2) EX/ES/CES processing.

------------------
gonk -- Saloon Links | Pre/Pro Comparison Chart | 950 Review