Ion's are in no way middle of the line. They are stiff as hell aswell. I've tryed them on a few times in the shop thinking i might like them, but they're just way to stiff for my liking, and I like a good mid flexing boot. I'd try looking at the Sabbath, that boot seemed pretty solid and had a good flex. Im riding the XIII this year, i have 2 days on them and i love them, super comfortable, and has a great flex, there just super expensive.