La Sportiva's crosslite fitted very well to my in between size (S-M) feet. They were LIGHT and breezy. Grips extremely well in the Asian mountains which is muddy and on wet rocks too.
It does however have some problem with wet roots and planks or on less than rough rocks.
Stability and protection wise, its not the best. I was wearing this shoe for Mt Kinabalu Climbathon and I found it lacking in with the down hill runs. Due to the very light weight nature of the shoe, as you 'brake' the material on the side wall expands and your feet kinda slide into the space between the sole and the sides of the shoe. Again, this is in comparison to a very tough Montrail Hurricane ridge which is built like a tank. I need not worry where i step on.
Built quality is very good though it looks filmsy. I've been thrashing it for mtn runs and its still holding up well.
Best piece of trail wear i have til now.