Trenner & Friedl?

Hello all-

I was intrigued to read Stereophile's (rave) review of the Trenner and Friedl Sun.
http://www.stereophile.com/content/trenner-friedl-sun-loudspeaker#KfAjtjvpzlOrJWRt.97
I've been on the lookout for a small speaker for a 9' by 11' foot listening room (where listening is mostly slightly off axis).  I've been thinking a coaxial design would probably be good for such a scenario and the fact that the Suns are easy to place is also appealing.  Does anyone have experience with the Suns?  If so, I would be curious about what amplification you are using, how much room you have around them, and how they sound at low volumes?  I'm also curious more generally if my assumption that coaxial speakers create a wide sweet spot is generally correct?

Thanks for any advice!