I have tried on countless boots, and this was by far the best fit for me. I chose this boot specifically for its ease of fit/customization. Fortunately, I was able to throw in my old footbeds, cook the liner, and go skiing. I haven't had to do any shell work on the boot/liner. If I do need a punch/grind, I am confident I can achieve virtually any fit goal on these boots due to the C.A.S. system. I wear a 12 street shoe, and I chose the 27.5 size of this boot because I knew if I had to blow them out anywhere I could, but I didn't have to. I did try on the LV version of the boot, but I have a 100mm last foot, so they were just a bit too tight on the sides, and just a bit too low on in-step volume. Give these boots a try on!!