I've only owned Koflach exps and my old pair sz 11 US (yellow w/purple) are beat to hell. They fit great with no foot pain. I just bought a new pair of Invernos sz 10/11 with the stock liner sz 10.5. Both felt the same in the living room but 1.5 hours into a climb they started killing me. I wimpered every step (solo climb). I have very wide high volume feet and looking for the widest boot out there.
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As I was getting the sizes for this message I may have found a solution. The old koflach liners fit great/comfortable in the invernos. Maybe I just need new set of liners for the Invernos?