Thought I'd just share my thought since this thread was a very big help to me.
I guess just not a big enough help though, Huh!
I am sure that if you don't like it it was definitely in the Setup.
Hey, know one is perfect!
Home Theater Magazine lists two Pioneers in their top picks for 2011, the Elite VSX 52 and the Elite SC 57.
The reviewer's like them and in their reviews was never brought up their dislike for their Sound.
Throughout the AVS Pioneer Forums from the VSX 1021 to the SC 57 a "Poor Sound Quality" post is usually a result of a poor Setup and performing the MCACC a couple of times to get used to it.
Then the follow up post is another question or just a simple, "Wow, Thanks for the help, it Sounds Great!!"
The majority of the posts are for help getting their Apps, Network or Gaming Systems set up right, which is usually just doing the correct tweaks to their Outboard Components so they work with the Pioneer.
If we let you down on getting the most out of your Pioneer, our apologies!
Hopefully you will have better luck with your next AV choice.
No one Brand or Model is perfect for everyone, I just hopes that you ultimately find the AV Equipment that will give you that "Wow Experience!"