What brand of speaker cables is everyone using?
I'm using several that I've picked up cheaply as needed, but my favorite so far are some I put together myself with Audio2000's cable and some neutrik jacks. Others I have and use are a short Ernie Ball one, a StageMaster from sweetwater, and a GLS audio one. I got another one, a generic brand from some DJ and audio supply online store I forget the name of, and that was copper-clad aluminum. Yuck. Don't buy CCA if you plan on making your own cables. I got rid of that crap. Anyhow, my hand-made cables feel the best and most robust out of the above lot.
Also, I've had issues with the traditional style jacks like this that just clamp around the cable insulation for strain relief:
The problem is that over time with enough handling (e.g., speaker comparisons where I'm constantly plugging/unplugging the cable) I've had the insulation inch it's way out from the clamp, and then I have to work it back in. The StageMaster has that problem, for example. For that reason I use the Neutrik chuck-style strain relief jacks as they seem to have a much more secure grip on the insulation and don't allow it to slip out, actually clamping down harder if it tries to:
Note that Neutrik also makes the traditional style jack in the first picture, and the StageMaster cable giving me trouble actually has the Neutrik branded jack, so don't think that just 'cause it's Neutrik you're getting the fancy chuck style jack.