I have the first season's EZ go's (don;t know the model #).
They are super light, but there is some slop in the heels, which, when combined with the slipper-like softness of the Scarpa Denali's doesn't make for super confidence in steep stuff in sketchy conditions, I can say that I've used that set-up to pull a sled (actually a Cascade 200 backcountry sled w/o brakes, loaded with about 350lbs ("patient" and gear) down Sorcerer at Magic (ungroomed) without a problem. (Granted, training, not a real patient.
I like the bindings, but I don;t really have experience with anthing else. I have to believe that there are now better choices out there.
Rules and regulations:
1. Don't piss off the locals
2. It's not nice to make work for the patrol