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sup, I have narrow(er) feet, was using the alpinestars SMX-4 for about 8 years...just got these Dainese boots in the same size (euro 44, us 11) and they fit like a glove!
the alpinestars had a ton of room around the toe (almost too much...made the boot feel floppy) and not so tight around the foot itself, and not a lot of arch support...the dainese boot is the opposite, and frankly feels like it has more support to protect the foot/ankle in a crash
additional plus: less bulk around the calf - I can wear these under a pair of khaki pants at work and they are hardly noticeable...just an inconspicuous looking set of textile dress shoes. The all-black toe slider, relatively pointy-ish toe, and lack of white/red on the heel/ankle area helps in this regard as well