Replying to difference between the 1080 boot and 1080 pro boot????

Whats the difference between the 1080 boot and the 1080 pro boot or course boot as it's sometimes called. Is it just that the pro is stiffer?? and like for more backcountry?? I want a get boot that won't kill my shins off cliffs and jumps, and I want a boot to go skiing everywhere with. But if i get the pro boot, i don't want it to be to stiff, And I'm only about 115pounds. Just wondering if anyone has skied
these two. Thanks