I can't stand soft case luggage. Next time you're at the airport, look out the window and see how the baggage handlers handle your luggage. The only things that can safely be transported in soft sided luggage are T-shirts and clothes that you don't mind getting wrinkled. Everthing else will be crushed or tossed around so that your stack of very important documents becomes a rat's nest of paper. Also waterproofing wears out, zippers break, and cloth bags are very easy to break into.
Hard sided luggage will also get crushed...eventually. I've been using cheap Samsonite hard sided cases for over 10 years now, about 300 flights. 1 I lost, 1 has 9 years on it and although not too pretty still works well, 1 did get a crushed corner on yet another case, but a hammer pounded out the dent. Avoid the hard brittle types of plastics and get ones with the softer plastics that scratch. My cases have scratches and nicks and lots of strange stickers on them but all work well. Even better, I've not have one crushed object or littered mess since. You will have to pack a little more carefully, trying to fill all the space in the case, otherwise things start shifting around...but that's what the stolen hotel towel is for. Compartmentalizing, layering, and strategic sweater cushioning will make your valuables much more safe.
http://www.ebags.com/samsonite/oyste...fm?modelid=121
It's light, durable, has good wheels, large, and cheap (you can get them for around $50.) Just about the exact same specs as the SKyway you linked to. The disadvantage of the Samsonite is it only has wheels on one corner so if you pack heavy, concentrate the weight towards the wheels.
Same thing goes for carry-on luggage. Get a tiny little hard sided case. I have a wonderful Delsey that's been with me for over 5 years. Costs $250 but was well worth it.
Just watch what the flight attendents and pilots use, and get that.
