I could not decide between SG10,SG12 and SIDI boots, wanted something protective and that would last. Been a long time Gaerne fan. Even the cheapest pair I had lasted. Well it was a smart move, you cant go wrong with these, the first time you place your foot in the boot it just feels "high tech" and expensive. They break in quick and will last years, best boots I have owned by far. I'd take these any day over all alpine star boots!