I like everything about them: construction, design, stiffness and durability. Yes. the sole isn't as grippy as the 510, but it doesn't matter if you get used to it. I think these are excellent shoes. Thank you Mr Litt.
Pros
Super comfortable. I like the protection provided by the high interior of the shoe.
Cons
Some customers report poor durability and wear and tear after just a few months of use.