I've auditioned the Sasha yesterday. Driven by all Ayre gear, the C-5xeMP, KX-R, MXRs and Transparent cabling, the speaker sounded surprisingly warmer and slightly darker up top than most other Wilsons. The Sasha sounded engaging and musical and was well balanced top to bottom. I currently own the Sophia 2 and having heard the Sasha, I bought a pair on the spot.
The only unkown to me were the MXRs but I own the Lamm M1.2s and the KX-R so I expect them to be very musical in my own system as well. The synergy between the Sasha and Ayre was great, dynamic, deep, well controlled and nicely articulated bass, excellent imaging and focus, warmer mids and slightly darker top than W/P 8's for example. Great speaker to my ears, job well done. If you didn't like Wilson speakers before, give the Sasha a listen.
http://i224.photobucket.com/albums/dd18/PHC1_2007/Wilson%20Sasha/IMG_1075.jpg
http://i224.photobucket.com/albums/dd18/PHC1_2007/Wilson%20Sasha/IMG_1074.jpg