Aluminum carry-ons seem purpose-built for protecting your belongings — and for making other travelers jealous. But for all their hard-sided beauty, they can be tremendously impractical. Most options ding easily, aren’t expandable and weigh a hefty 9 to 12 pounds. Still, if you want to look more like a Bond villain than, well, every other person at the check-in desk, there’s no better option than one of the five here. Get one before your next trip and wear all the inevitable scratches with pride.