I am going to buy my 1st pair of Sidi's in the next day or two & I've already tried on a bunch. The only reason I haven't bought them yet is because I have a sizing issue.
I'm a "dead perfect" size 9 in a pair of Nikes to provide a baseline. In Sidi B-2's & Vertigo's I'm a very snug, no room to go anywhere 9.5 but a pair of 10's are quite loose.
I'm a dry rider for the most part so I'm not looking to wear thick socks, etc. just looking for the best fit.
Will they stretch at all once broken in? If so I'm going 9.5 but if not and my feet get hot, swell, etc. 9.5 is not going to be a good idea.