Wilson Sasha , Avalon Indra or Magico V3?

At this level, it should be a matter of personal preference; all the speakers mentioned are phenomenal. If it were my system, the Magico V3 would be at the top of the list. Of course, MIT cabling in this system would be a must.

Which ever one you like best.

Wilson, Spectral, and MIT are always put together for trade show and demo. They are often sold together. So I would think Wilson would be a good start.

the cheaper out of the three and better if its sounds the best....

Speakers are a very personal choice, you must audition them with your electronics and your music, not demo discs and decide which you like the best. Your electronics are superb and as Bikerduud suggests, MIT is the only way to go with Spectral so as to achieve their maximum performance. Best of luck with your search and trust your own ears as you are the one who has to live with the speakers.Reviews are just a guide.