Originally Posted by AdelaaR

Good question.
They are very light (lighter than M324's), very aerodynamic for what they are and sturdily made.
The clicking system is great.
The only problem with them is that the platform side isn't very grippy since it doesn't have any sharp pins ... i personally do not find this to a problem because I always use the clickside when going on rough terrain and only occasionally use the platform side when doing easy roadriding with my wife.
For casual riding the platforms are definately good enough and even very comfortable because they are long and give very good support on shoes with soft soles.
Do not go XC riding with the platforms though.