I've used these bindings exclusively for the past 2 years.
They have seen everything from resort skiing to midwinter tours to spring steeps like the grand teton.
They work pretty well, I have had 3 issues however.
1) I have them mounted such that I am near the back of the adjustment track(so my wife and I can share the same mount) and this can cause snow buildup under the heel. This then compresses into ice and makes it difficult to rotate the heel into downhill mode.
2) I broke the anti rotation pins, but they don't rotate on the fly for me much, so not a huge deal.
3) Just before my grand teton trip the adjustment track stopped keeping the heel in the right place(it would adjust looser on the course of a tour, requiring on the fly adjustments with a ice axe or pozidrive if you have one). Good thing was dynafit was quick with a replacement adjustment track and I was able to be up and running in time for the grand.
I would give it 3.5 stars if I could, but will round up since other than these issues it has been a good binding and reasonably light weight.
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