Steven L. Sheffieldwrote a review of Sidi Genius 5.5 Carbon Composite Shoe - Men's on February 2, 2009
When I worked in bike shops throughout the 1990s, we had saying ... either you ride Sidi, or you WILL ride Sidi. At that time I never met anyone who switched from Sidi to another brand of shoe.
This is especially true of my own experience. I've been riding Sidi since the original Genius model; and currently ride the Sidi Genius 5.5 Mega Mesh. Every time I wear out a pair of shoes, I try various models, and always end up back in a new, upgraded pair of Sidis.
As far as I'm concerned, Sidi can do no wrong.