The choice between 2-wheel (rollaboard) and 4-wheel (spinner) luggage depends entirely on your travel environment. 4-wheel spinners are the gold standard for airport terminals and hotel lobbies; they allow you to glide the bag next to you with minimal effort, reducing strain on your shoulders and wrists. They are also much easier to maneuver down narrow airplane aisles. However, 2-wheel luggage is significantly better for "rugged" travel. Because the wheels are usually larger and recessed into the frame, they are much more durable and can handle cobblestones, gravel, and curbs without snapping off. Two-wheelers also offer slightly more internal packing space because they don't need a wide wheelbase. If you are a business traveler moving from taxi to airport to hotel, 4 wheels are a life-saver for your back. If you are a backpacker or a tourist wandering through the uneven streets of Europe or Japan, a sturdy 2-wheeler will likely last longer and cause fewer headaches on rough terrain.