I would want to have speakers available that had very different sounds. There isn't much point in two speakers that sound nearly the same unless there are a lot of speakers in stock. I think something like Paradigm or Focal (my personal favorite) on one end and something like a Spendor on the other end to provide warm vs. bright as I think most people lean one way or the other. Also, maggies provide a different technology and sound that would be a beneficial addition.
The brands listed are just some example from my listening experience, but I know the concept would appeal to me.
The brands listed are just some example from my listening experience, but I know the concept would appeal to me.