Who uses long interconnect like in dealers?

I tried this a while back. First, put my source/pre on the wall level with my lstening seat with amps by speakers. Noticed an improvement in soundstaging (esp lateral spread) getting the equipment rack out from between the speakers (BTW, some recommend a rack between speakers for anchoring center image, ie, Michael Green).
Then went all out with an 8m Discovery Plus 4 and put all source equipment in closet ( sounded and looked good, but too much hassle).
Now using only one amp and a CD w/ volume control (Resolution CD-55) on low modular racks (Lovan) that don't obstruct image. This way, using <1m ICs allow me to use a better IC (8m Quattro-fil would break my bank). Speakers are way out into the room away from equipment anyway and equipment is somewhat isolated with Aurios/Daruma/Bright Star.
I think a lot is decided by your choice of IC. Some are reasonably inexpensive (?) to increasing lengths (Discovery, Transparent, Purist, etc) and others will cost you a fortune. Dealers can absorb the cost easier than we can (consumers).

I too am looking into this for my set-up. But I'm plagued by the thought of effectivly having this HUGE antenna between my control unit and amp. Yikes! Since I cannot go balanced with my equipment choices, won't this degrade sonic quality? Or are single ended cables shielded enough to stop the pick up?

Best,

Mprime, You do have to be careful with cable selection to avoid RFI but unless you have unusual problem in your area good shielded cable should work fine. I would recommend that you audition the cable first. The only problem I have had is when I ran the cables parallel to power cords or near large power supplies - and thats easy to correct. I've never experienced RFI thru the cables.

I use 6 meters of Randall Research TX, which I recently
convert to balanced/XLR.

You rarely see long interconnects because of the wide spread use of equipment racks. I can't believe people continue to put these racks between their speakers.

Kana, how would you describe the sonic differences between the balanced run against the unbalanced?