As Duke Ellington said...."If it sounds good, it is good".
Same "Brand" probably does not matter. Most brands make many "Models" that have nothing in common with each other. Only the company name on the jacket is the same.
I assume your gear (Preamp, Amp, CD, Phono, Tuner, etc) is not all made by the same company, and is also not the same company as the cables are using. So using the same cable should not really matter much, when most likely the gear is not all the same brands as well?
I must admit though that I do like what happens when I connect a Blue Circle preamp and amplifier together with the Blue Circle BC-95 interconnects. This is a case where gear and cables are all the same company. That does not mean that other brands of cables will not work as well or better.