Have you treated your listening space?

I don't have a dedicated room but the largest improvement was when I installed 16" ASC Tube Traps in the front corners. No other traps dealt with the bass as well. A tightened bass resulted in big mid range improvements by removing the bass smear that affected definition there.

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Thanks for your posts.
Buconero has it right. Many keep spending and spending on equipment and never address the room.
I had a bare room for years and always figured top equipment was the ticket. I'd spend hrs. listening for differences in cables, etc. Then I realised that my room could not resolve the differences.
I did some reading on acoustics (FUN!)
"Acoustic Design for the Home Studio" $15
"Critical Listening Skills for Audio Professionals"
"Master Handbook of Acoustics"
This was more fun than reading equipment reviews and helped me to see the issues that MUST be addressed in the room for a high performance system to sound great.

Otherwise,
IGNORANCE IS NOT BLISS!
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Buconero,
I don't disagree with you at all when you say that there are many well heeled audiophiles who would not spend the money even though they can afford to. I am just saying that audiophiles of all financial means feel intimidated about how to approach room treatments and what it might cost.

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That's the really funny thing.
Room treatment costs less than a couple of cable upgrades!
I got some pretty expensive draperies (my wife likes them too), some bass traps and 2" and 4" wall panels that look ok for under two thousand dollars. How much have you spent recently on component upgrades? I bet plenty!
It's just a matter of education, it's not that complicated in its basics.
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I tried a host of room treatments and achieved the best sound when I sold most of the stuff and used things like tall ficus trees, carpet, book shelves, proper speaker placement, etc...

I now have great sound and a great looking room.