+1 on the cleaner bag. (I don't buy the bags' alleged effects on the garment, short term.) I gave up on suitcases a long time ago, instead opting for a garment bag that folds in half and fits nicely in the overhead bin. Never a problem now.Cleaner bags are the key. Everything gets its own bag, shirt, pants, jacket, maybe even one underneath the jacket on the hanger and one over. And unpack immediately on arrival.