help me decide speakers for two channel audio

This will come down to which speaker does best with the aspects of sound reproduction that are most important to you. Without that information recommendations are not very helpful or meaningful. Tell us what you're looking for and you'll get much better advice here.

That said, I also noticed Vandy 5, Aerial 20T, and Rockport Mira for sale in your price range that are also excellent speakers.

SLightly below your price range are the Avalon Eidolon Diamonds. I think they outperform all but the Egglestonworks.

Used MAGICO!!

Narrowed it down to three.
(1) Wilson audio sophia 2
(2) 802 Nautilus
(3) Usher 8871!!
Please guide me towards one.

I would vote for the Wilsons. More forgiving and musical than the other two, IMHO (I'm not a big fan of Ushers). Of course, that's my preference; not knowing your musical preferences, room size, or what you're really after in speakers, as some of the others have pointed out, this is just a shot in the dark and reflects my musical tastes, not necessarily yours. I strongly suggest you get out and listen to the speakers before you buy.