I have bought now thesis for 3 consecutive seasons and for me personally They are the best mix between light weight, not enough cushion and excellent road feel. I really feel like I am running faster in them .... Which is most probably not true .... but anyway ...
I find them being quite long-lasting - definitely last me a good season Which is around 1000km for me and still OK to run, but I do feel dass die bottom is not as cushioned did at the beginning - but this is normal with all shoes I guess.