Need speaker cables match w/system?

The XL cables are doing ok but I feel it seems kind of like a little dark it not really open forward, I don't know if it might be the XL speaker cables or my XLO Signature balance interconnects. I'm thinking of changing the XL to 5.1 XLO Signature speaker cables but I still doubt about it.

DNA-I Rev.A is exellent! Bass is more dynamic and tighter, great image and more detailed. I'm about to have Steve upgraded my DNA-I's transformer the same kind of DNA-IIs. Steve told me that by upgrading the transformer, bass will be more definition, overall sounds better and I'll be happy. Also, I can get the money back with the old transformer if I'm not sastify, it'll cost me another $400. You had listen to DNA-II, I wonder if it sounds a lot better tha DNA-I?