inexpensive warm sounding speaker cable

These are warm and open. Built well and can be ordered in 2m.

http://www.ebay.com/itm/MS-Audio-OCC-Long-Crystal-Copper-3m-2x2-Speaker-Cable-/280949267617

Give these a try and see what you think. 30-day money back guarantee.

http://shop.mapleshadestore.com/prodinfo.asp?number=DHELIX-PL

JW
Cryo or anti-cables at 10.00 a stereo foot.

Acoustic Zen Satori or better yet satori Shotgun if you are setup to bi-wire

very resolving, tonally balanced
you can pick up a pair used here quite often

Some interesting choices here Mr. T.
Cardas is an expected recommendation.
I also agree with the HT Pro 11 and would add Pro 9+.
I would stay away from silver plated copper.
The Anti-cables should also be alright but given your inclination towards things vintage, why not try single runs of Jupiter solid core copper in cotton wire. I would consider their 16awg for single runs and maybe 16/20awg if you are biwiring. You could also consider their 6x26awg (twisted together = 19awg aggregate) 6-nines copper in cotton. Don't mistake the clarity you hear for a lack of warmth.