After reading about all these expensive cables and their extravagant claims, I decided to source the same wire that goes into many of them.
I have my monoblocs underneath and therefore close to the speakers. I ordered 8 feet of 14awg UP-OCC wire (with PTFE insulation) online. It is quite springy so I clamped it gently to the bench and cut it into 4 equal lengths. Assembling it into 2 x 24" speaker cables took a few minutes. I kept it running in the same direction, just in case. Be careful to gently slice the insulation and not to scar the copper.
Anyway, the improvement in sound quality was of a high order. Large increases in speed and transparency, more air, better definition of instruments, less coloration, backing voices I never noticed before etc. The improvement in musicality was impressive.
I urge folks to try this before spending lots of money on speaker cables. I don't bother with connectors as I feel they are another item in the way but that's your call. The wire was $6 a foot.
Available here:
http://www.partsconnexion.com/wire_hookup_neotech_copper_teflon.htmlSee a photo of my cable here:
https://www.dropbox.com/s/6iot28p0weuwytn/up-occ.jpg?dl=0