There are as you know 2 ways to go on this.
Myself, I would go for one brand for the top and bottom. I also switch them periodically so each cable is breaking in fully.
But, I can see the other view on this, optimizing the benefits of each cable strong points for the frequenecy extremes that they will be seeing.
But, I still think in the end, your speakers were made as a set and a set of wires of the same type should be used through out.
Otherwise, there may be a large gap in quality when one cable passes off to the other.
Just one mans opinion.
Myself, I would go for one brand for the top and bottom. I also switch them periodically so each cable is breaking in fully.
But, I can see the other view on this, optimizing the benefits of each cable strong points for the frequenecy extremes that they will be seeing.
But, I still think in the end, your speakers were made as a set and a set of wires of the same type should be used through out.
Otherwise, there may be a large gap in quality when one cable passes off to the other.
Just one mans opinion.