Bindings used to fall into two main styles.
Fixed resort style bindings, and alpine touring (AT) bindings.
A binding for the backcountry will have a walking mode
to allow for trudging uphill ... because of this they are
probably not the choice for everyday resort ripping. Regular
resort bindings are built to survive the abuse you heap
upon them at your local ski hill.
Over the past few years a third catagory
has popped up, A sidecountry binding if you will. Bommber
and secure like a resort binding ... but allowing for a
tour mode, these bindings offer the best of both worlds
... but one caveat, they are heavy!
Just ask yourself these questions about any
binding: Will they hold you in? Shed snow easily? Release
when you eat shit under the lift while snot-nosed school
kids laugh there asses off overhead?
The reality is that all bindings are
subject to the same stringent international DIN standards.