If you wear 11 USA shoe, what size Butterfly shoe would you get?

[FrenchFrog33]

I have followed the Butterfly shoe chart and measured the insole of my current shoe. I just don't trust it.
Any Butterfly shoe owners? What is your experience?

 

[piligrim]

I am wearing size 11 and I have butterfly shoes 10.5. Butterfly 11 was too big