I used to ride the original Sidi Genius shoes back in the day... Loved them. But I don't know, either Sidi got even thinner, or my feet got fat because their current shoes feel a little tight to me, and I go up 1/2 size to get a little more toe box. Currently, I have Bullet 2s and they are only ok. The soles flexed a bit too much and hurt my arches so I bought Specialized WM80s. The soles are fiber and stiff but not too stiff, and are aggressive enough to be good for hike-a-bike areas. The toe-box is wider than Sidi, and that makes my toes happy. I love them. At first, I was reluctant to buy them because they are friggen WHITE. WHITE. But they wash like a dream in 5 minutes and dry none the worse for wear. I also have Shimano road shoes and use them over my Sidi Zyphers. That they cost less is icing on the cake...
Tzvia- rollin' slow...
Specialized Ruby Expert/mens Bontrager Inform RXL
Specialized SWorks Safire/mens Bontrager Inform RL
Giant Anthem-W XT-XTR/mens Bontrager Inform RXL
Fuji Newest 3 commuter/mens Bontrager Inform RL
Novara E.T.A commuter/mens Bontrager Inform RL