In my Magnepan Mini office system, I need 2 sets of speaker cables. One set from the amp (stereo) to the bass module. Then another set from the bass module to the tweeter + mid satellite panels. I used cheap (but well regarded) cables on both sets and it was very good. I even wrote about it on A'gon.
However, I added a stand to raise the bass panel off the floor and this allowed me to use the very short expensive Audience FrontRow speaker cables I purchased in the past for monoi blocks. Adding this expensive speaker cable did improve the sound a bit more on the Maggies.
I do have another set of long Audience FrontRow speaker cables I use for my Livingroom system and can try an all Audience setup on the office Maggie system, but I have not done this yet. think I will try this next week.