Best light suitcase: July Carry On Light, 54X36X19cm, 1.8kg, £195 Best budget price: Aerolite cabin luggage 50x40x20cm, 2.1kg, £59.99 Best under seat cabin bag: Cabin Max Manhattan travel bag, 40X20X25, 0.5kg, £29.95 Best travel backpack: Bellroy Transit Backpack, 53X36X19cm...