Man, this question is almost like asking someone which saddle they like the most!
I ageer totally with what BikeKingV1r said... I have used both and have used Sidi's for a long time: Genius 6.6, Ergos, Wire... And the Shot.
I actually used the Shots for a little while and ended up selling them. The reason is that my feet run medium to narrow and I could never find a way to accommodate the closure system on the shot on top of my feet without getting my feet numb after 45 min of riding. And I use custom insoles!
For people with a high arch or a high instep, the Shot can become a problem. I have spoken to several riders, including some pros, they mentioned that even though they could use any Sidi they wanted because sponsorship, they stayed away from the Shot for these reasons. The Sidi Shot that Froome uses are very far from the Sidi Shot you and I buy. Many pros use the same mold of Sidi Wire you and I use, however. Mikel Landa and Uran used off the shelf lasts...
https://www.pezcyclingnews.com/newswire ... is-froome/
http://www.sidi.com/en/news/460/the-tou ... -all-sidi-
(Click on image to expand and see detail)