Best speakers for off-axis listening

My budget is up to 9-10K. However, I want to do this right and only do it once for the next 12 years.

If you can live without deep bass, the MBL 121 will fit your budget (10K new).. It goes down to the high 40s or something like that. Try listening to it and see what you think!

Bose 901 (yes really!) There may be other things you dislike about them, but, when placed in front of the proper kind of wall (rough brick) they do create a huge sound stage.

My speakers are Maggies, and I have three in the front, but one thing I like about them (and previous planars) is the fact that they disperse the sound throughout the room. I can walk from the back of the room right up to a speaker and there is hardly any apparent change in loudness. Measurments with a SPL meter do show that there is actually a reduction with distance, but much less than with my point-source box speakers.

given your budget....the gradient revolution. you will get the best of all worlds.....and change back. you can spend the ten and get way way way less.

Check out the DA-1 from Daedalus Audio. It is designed to address your concern.