[5String43]

Too big a bag can mean too much weight. If I recall correctly, the limit on most airlines is 42 pounds per bag. That's really easy to do with a standard-sized bag. Go overweight, pay lots in a fine. We got by just fine on our last trip, in July, to Switzerland and Italy for two weeks, with a single 22-inch rollaboard each. Had to plan and pack carefully, but it worked out just fine. It's doable. Also, so much easier to schlep around, in and out of hotels, in and out of cars, onto and off of trains, etc.