I´d stick to the same brand, but it´s perfectly ok using a 4TC/ 8TC combo. (or AQ Argent/ Midnight, etc) I´m using a double run of Argent. Good Luck!
Speaker Cable Matching.
I now need a double run of speaker cable for bi-amping. I will need to use my Kimber 4VS as a part of the run(s) to start, this is a given. I am considering an additional run of 4VS or instead mixing AudioQuest Type 2 (using the whole wire for the + or - terminal = 4 cables plus the 2 cable run of Kimber) or addding two single runs of AudioQuest Type 4. Will these two cables (manufacturers) work well together, or should I just stick with all Kimber? Also if I mix/match where would I run the Kimber - on the the HF or LF? After the final (for now) relocation of the equipment I now require 18ft runs - ouch! I like the sound of the Kimber 4VS but would not shy away from added warmth. I will wait to experiment with better cable until I can reduce the length of the runs.