Help me pick some new or used speaker cables

Have you tried positioning your speakers differently? Maybe swivel them out a bit if you have them facing your listening position.

@soix 

i responded earlier, but you may have missed my current cables are AQ midnights.  Current interconnects are Shunyata & AQ

I have played w speaker position.  As I have them toed ideally now for the central-image-3-d-sweet spot.  Not much else to do there as I have them as far away from the wall as I can get as well as a perfect equilateral triangle to my ears

For your type of music. A lot like mine and your system I would go with Staighwire Crescendos. Excellent cable for price and great bass. Including all ICs. 

I was thinking, if you have them toed in so you can't see the inside surface of the cabinets, you might be getting too much high frequency energy to your listening position. Try toeing them out until they are firing straight down the room and see if you get a reduction in high frequency energy. It might help to tame them a bit.