Get the 13's.
You want the 13's for more panel and definitely bigger woofers. After trying the ML Theos, I've decided If I go for another ML it will be with 12'" woofs/bigger panels. I will also consider the other brands like Magnepan or Sound Labs.
For maximum bass performance, minimum 2 subs with whatever setup.
Neither model will be "too small/ big". The 13's will just eliminate future audio itch for "whats better". I recently picked up a pair of Theos, just to see if I'd like the ML sound in my room. I do, and am selling the Theos to go big. My room is similar size, with speakers on the short wall, about 7 feet out.
You want the 13's for more panel and definitely bigger woofers. After trying the ML Theos, I've decided If I go for another ML it will be with 12'" woofs/bigger panels. I will also consider the other brands like Magnepan or Sound Labs.
For maximum bass performance, minimum 2 subs with whatever setup.
Neither model will be "too small/ big". The 13's will just eliminate future audio itch for "whats better". I recently picked up a pair of Theos, just to see if I'd like the ML sound in my room. I do, and am selling the Theos to go big. My room is similar size, with speakers on the short wall, about 7 feet out.