fyi, I have not heard the Sasha 1. I own the W/P 8, and my brother owns the Sophia 2. I bought mine used on Audiomart, he bought his Sophia 2 almost new from a dealer when they first came out - way before me. We both running with tube amps and tube preamps. Mine are monoblocked McIntosh Mc275 amps and McIntosh C2300 tube preamp. The W/P 8 has more bass than the Sophia 2. Treble and mid range are similar and they have the same titanium inverted dome tweeter. The Sasha 1 was the replacement of the Watt/Puppy 8. It is a little bigger and the design was changed a little. I am not sure if they did anything to the tweeter, but, you should check that out. Two things to note. The front foam on the W/P 8 deteriorates. Wilson sells updated foam cutout replacements and I replaced mine. The updated foam cutouts are not cheap, but, they look great - price is $440 for four of them. It is also kinda messy to do the replacement. In addtion, I would change all three resistors in the W/P 8. Wilson sells the replacements, but, they are not cheap - Resistor kit is $160 per speaker, and it is only 2 out of the 3 resistors. The other one you have to buy separate.. I am not sure if the Sasha 1 has the new formulation foam on the front that does not deteriorate or not, but, that is something that I would check out. Regarding sound, since the Shasha 1 is bigger, I would imagine you would get more lower octave bass. My W/P 8 in my system are the end all speaker for me, even in my large size room. If the upgrades are not required on the Sasha 1, then, the price difference may balance out any price difference. Without listening, just on specs alone, if the prices were similar, and size was not a factor, I would probably go for the Sasha 1. BTW, you can call Wilson direct and they will talk to you about your decision and what maint. is recommended on each speaker model. They are super nice. They will also answer your email, but, that may take a couple of days. Here is a pic of my Watt/Puppy 8 with the Wilson updated Foam that I installed.
