I have had both, the canyons and adventure and to be honest both a little warm in 26 degrees plus and the canyons can be a bit awkward to fasten but that could just be me. I kept the Adventure because they gave more ankle support, just in case the worst happens. I used to think I was in an uk11 but the Sidi Adventure boots I have now are eu45 UK10,5 and do seem to have room for winter socks. They do take a while to wear in but I do like them.