Originally Posted by Jrlane
Would you upgrade your center channel to match your L/R (the center currently is a quality center, just not timbre matched)? Or would you upgrade your receiver to take advantage of the new lossless DD and DTS blu-ray formats?
Lossless DD & DTA aren't going to give you a significant improvement in sound quality unless they are mixed and mastered differently than the other tracks on the disc.
What a new receiver might provide you with that can potentially give you a significant improvement in sound quality is built software like Audyssey XT32 that optimizes the equalization of your system for better sound quality.
Perhaps your current receiver has this feature? I find a lot people who have it but don't use it.
Otherwise doing manually what Audyssey does for you automatically can also give you better matching of your center channel speaker.
How about some make and model information?
What is the room like?