If I may, I'd like to suggest you consider the smaller driver models. The main reason is the horizontal coverage angles. The K12 is 75 deg, the K-10 is 90 deg, the K-8 is 105 degrees. Wide coverage not only helps those on the sides to hear better, the sound hitting the side walls is not really a bad thing. Lateral reflections add spaciousness to music. For speech we are concerned about sound hitting walls because of intelligibility, but less so with music. Part of what makes the Bose L1 what it is is that it's horizontal coverage angle is 120+ degrees. I won't presume to tell you which is best for your sound, but to suggest that you consider the angles in your decision. The bigger speaker gets louder and lower in frequency as well, so that's also a consideration. Perhaps the optimum, except for cost and portability, would be a K-8 on top of a K-Sub.