I have settled on a new pair of Tecnica Cochise boots after trying them on at a local shop. I am trying to decide on the 120 (yellow) of the 110 (blue). For me (5'10" - 170 lbs, ski patroller) I'm leaning towards the 110 flex, but was wondering if there is a difference in the liner between the 110 and the 120. I also tried on the Mach 1 in a 120 flex (M.V.) and was told this liner is different as well. So what is the difference in liners between these boots?