Actually the size 10.5 is a 10 shell with a thinner/bigger liner. I wear an 11 shoe and jammed my foot into a 9 shell lange or for a roomier (slightly too roomy) fit wore a 10 shell. I'm the same in an Atomic boot with 27 or 28. Actually the Atomic in a 27 is sweet once I make room for my mutant long first toe and the 28 was just too big. Try on any lange comp low volume fit in a 10 shell and you'll have a good idea if it works. They are quite low volume and do not accomodate a high instep very well. Hell if you get a good price you can flip them. That reminds me I have some atomics in a 27 to go on. Boots don't move well on eBay though.
It's not so much the model year, it's the high mileage or meterage to keep the youth of Canada happy
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