What a great problem to have! All 3 are fine choices. I personally use the Magnepans with all McIntosh solid state gear. My room is about the same dimensions as yours. The Maggies work superbly!
On a side note, I had the Martin Logan SL-3 speakers prior to the Magnepans. I like the Magnepans better. If you fiddle with placement you should be able to zero-in the Maggies to a perfect sound. Get the Maggies!
On a side note, I had the Martin Logan SL-3 speakers prior to the Magnepans. I like the Magnepans better. If you fiddle with placement you should be able to zero-in the Maggies to a perfect sound. Get the Maggies!