for me: 8 years... I see no reason to upgrade.. I got a DIN of 14 on my Marker Bindings. I dont see any revolutionary changes in bindings other than fancy pretty graphics... woo f'n hoo!
They are functional and safe. Old.. and they work.. and I rarely see DIN of 14 on anything.
Go for it... tell me I am wrong and why?
I dont need a "I hate marker bindings" debate.