I never use the DSP modes. They all sound like crap. Sometimes I use 5 channel stereo while watching F1 or college football, but otherwise all that seems to be required is DD/DTS and Direct/Stereo.

What is the difference in the price of the 2803 and 3803? Enough to upgrade your speakers or sub? IMO, that would be the better route than popping for a pricier receiver and shorting yourself elsewhere.