Magneplanar 20.7's. There is no such thing as overdriving a room. It is all about what you can tolerate in the space from a visual perspective.
The 20.7s are big head on but they are very narrow and if dampen the wall behind them you can keep them 2 feet from the wall. With the tweeters inboard you can put them right up against a side wall. There are those that think the tweeter in the 20.7 is the best tweeter ever made. I am inclined to agree and I currently use 8 foot Sound Labs ESLs.
Relative to any of the dynamic speakers you have mentioned the 20.7s are in a different league. Higher definition, faster transient response, larger more life like imaging. The only significant deficit is below 40 Hz.
On the other hand the speakers you mention do not go any lower. Frequency response measurements are taken at one meter. Bass dies off very quickly after that with point source drivers.
Finally Magneplanar has a great reputation for customer service.
Hope You succeed in finding the right speaker for you. I have made the wrong choice on several occasions.
The 20.7s are big head on but they are very narrow and if dampen the wall behind them you can keep them 2 feet from the wall. With the tweeters inboard you can put them right up against a side wall. There are those that think the tweeter in the 20.7 is the best tweeter ever made. I am inclined to agree and I currently use 8 foot Sound Labs ESLs.
Relative to any of the dynamic speakers you have mentioned the 20.7s are in a different league. Higher definition, faster transient response, larger more life like imaging. The only significant deficit is below 40 Hz.
On the other hand the speakers you mention do not go any lower. Frequency response measurements are taken at one meter. Bass dies off very quickly after that with point source drivers.
Finally Magneplanar has a great reputation for customer service.
Hope You succeed in finding the right speaker for you. I have made the wrong choice on several occasions.