Been browsing the LV website, inspired by the Steffi Graf/ Andre Agassi Journey feature, and was looking at the Keepalls. Are these a good luggage choice? I am a huge fan of my Speedy 30 and wondered if the Keepalls were as good. Are they easy to carry if they have a shoulder strap? What size is best? I'm quite attracted to them as they are an LV classic design and the first "soft" travelling bags, but am usually a rucksack girl when travelling. Please let me know what you think or if you are an owner and have good or bad points about Keepalls. Thanks!