This superstrong bag's wide handle toughens its frame and eliminates a center chassis, which eats up space in standard rollers – but the added structure causes the bag to weigh in at seven pounds, 12 ounces, the heaviest in our test. "It's ultratough, and the off-road wheels are rugged," says Dickey. "But unless you're planning to drag a carry-on up the Inca Trail, this one is overkill." [$300; campsaver.com]