The Thule Subterra Carry On is one of my favorites. The bag is easy to pack and holds much more than expected due to an internal compression panel. All Thule bags are beautifully designed and this one has a thoughtful addition of a zippered mesh pocket to provide quick access to your passport or phone. The over-sized wheels and telescoping handles make it extremely easy to maneuver through the airport of your choice and the nylon is durable and water resistant. In short, you and your belongings will look amazing and everything will fit in the overhead bin. (Thule.com, $299).