I would like to know if there is an optimal configuration when I'm listening a DVD? I have a NAD C370 (stereo integrated amp) with a pair of Totem Arro and can only listen in stereo mode. Is there a difference between the Stereo Surround and Dolby Digital when I'm doing the setup before viewing the DVD? Which mode should be the optimal one in stereo for such configuration? If I have the choice, should I look for DVD with Stereo Surround 2.0? Thanks.