Hi, I had a pretty long run of Transparent Ultra single-ended interconnects (25 ft) between my amp (Audio Research VT100 MkIII (tubes)) and preamp (Audio Research LS-15). I switched to the same length run of Transparent Ultra balanced and heard greater volume and greater detail. Not sure whether I heard more bass. The speakers I was using are Genesis 500's, floor standers w/their own amps for bass drivers, so the amp/preamp and interconnects were only affecting the mids and highs. When I changed CD players from a Meridian 508.24 to a Marantz SA-1 SACD player, I felt the highs/mids were too harsh and not as sweet as they had been. So I went back to the single-ended run of Ultra!
I hope your dealer or seller of the balanced runs will let you try them first in your system. Sometimes the balanced cables sound better, but sometimes worse. I eventually sold all my Transparent interconnects and have changed to Ensemble's new Dynaflux, in balanced runs. The sound is wonderful, detailed, warm, no harshness, no noise. I am still using the ARC VT100 and the Genesis 500's and the Marantz SACD, but changed preamps to the BAT VK30SE.
Well, that's my experience for you, for what it's worth.