Just an update on these since I purchased a second pair. Still an awesome binding. And I like the simplicity of the lock only mode. But you have to realise and fully understand what that does. Glad to hear that Dynafit is again offering the steel option instead of Titanium only on the lcoking bolt. Now that the steel is offered and after a some serious down in these guys I'll give them a 4 star rating. Wish it were a 5 star but the lack of a flat boot and a higher heel riser..either would make them a solid 5..still going to hold at a four.
At the price...most will look at tehm with a very critical eye.
Either way they were my choice for bindings while skiing from Rainier, Hood, Baker and St Helens this spring.
More here on some other thoughts about this binding.
Still one of my favorite pieces of gear. Only two pre releases in 2 years and all on some really difficult terrain. Pays to clean your boot soles after a boot pack. Hard to believe but this is a best buy value in the long term. Dynafit now offers steel spring replacement parts when they are available in the US.
After a season of racing on these, there is no disputing that these bindings are designed to cruise uphill. As others have pointed out, the downside is that grooves develop in the heel spring. Also, I needed to adjust the toe lock tension screw after the lever and lock bump have both shown some wear as well.
but so light weight that the wear is unacceptable imo. One day and 20K vert of down hill and the rear binding pegs are showing signifigant wear at the heel. Not good for a $800 binding. I'll likely go back to the low tech and save money and add a bunch of durability.