Speaker wire, help my laid back sound??

Hello, thanks for all you responses so far. To answers some of Gunbei questions: By "laid back" I'm referring specifically to a lack of punch, dynamics and a slightly recessed mid-range. I'm not sure if I need more reflective surfaces, the entire wall behind my speakers is glass. I've always felt the culprit was the long run of speaker wires and going with a long run of balanced interconnects and improving my speaker wire would fix a lot of this problem. Here's another question: I'm looking at spending another $2000 for good speaker wire and a stand that will accomodate my TV and amp and meet with the approval of my wife. Am I better off sticking with the long run of Goertz and spending the money elsewhere??

Hi Gunbei
My room is 18'long X 15.5' wide X 9'high, my speakers are on the long axis. Keep in mind also the room is completely open on the wide axis at one end. Thanks for all your advice thus far.

I'm going to move some furniture around this weekend and see if it makes a difference. As for Philojet comments, what cables would you consider to liven up a stereo's presentation other than the AC MI2 and do think the 27.5 feet length might deaden the liveless of the Goertz wire.
Thanks

All you suggestions are excellent and much appreciated, I'm going to see what I can do about the room acoustics, and from there if necessary demo some silver cables, Greh, I'm not familiar with Ridge Street M S's, do they have a web site, I don't think they have a dealer where I'm from??