depends on what you're looking for.
the F12 is more of a touring specific binding. not really meant for hard charging or taking abuse. if you want to do some all day tours through the backcountry then these might be for you. super lightweight so they're hiking friendly.
the Duke EPF is more of a slackcountry binding that's meant for skinning up some burly lines but not meant for a long long tour in the backcountry. it can handle abuse and is even acceptable as a resort binding. heavier than the F12 but it can definitely handle more.
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