speaker cabling for subwoofer and tower pair

I am a new owner of Focal Aria 926s, and a Gallo TR2 sub. I have connected the sub to the amp, and the speakers to the sub, with Radio Shack 12 gauge speaker wire. So far so good. I have $4-500 to burn on curiosity, and I'm curious to explore the benefit of commercially prepared speaker cables. At first blush I buy one pair to go to the sub, and another pair to go from the sub to each speaker. The physical connection is quite simple - my interest is in cable selection. I'm not asking for the best cable, which cannot be answered, only if a cable type is more suitable for amp to sub or sub to speaker. One possibility is a higher end cable from sub to speaker and a less sophisticated cable from amp to sub. I have no clue. Any thoughts along those lines would be greatly appreciated.
This post has been rendered superfluous by other entries. No need to waste time on it. I'd delete it outright if I knew how.