Opionion Sought 4 MIT or Tranparent Speaker Cables

Sorry all for another 'vs' question but I'm using a set of Tranparent Music Wave Plus Biwire cables from my Citation 7.1 amp to my B&W 9nt Speakers. (processor to amp are MIT Shotgun 3 i.c.'s). Although I'm not really looking to upgrade in that area, an opportunity has presented itself to do so with a really good deal on some MIT Shotgun 1 Biwire cables. It will cost me at least $600 (by my estimate) to do so. Am I'm going to be spending my money wisely?? Any comments are welcomed. My set up is for H/T and Music, vinyl being played mostly.