The weight challenge is currently the hurdle in my one bag luggage choice. I'm petite and travel tech heavy. I've been pondering lightening my clothing load a little to allow for the electronics and settling on a lighter wheeled bag. My eBags TLS weekender gets too heavy for my size and gives me shoulder pains. Yes, I'm sure I put more than 14 lbs in it.
Osprey just released a 4 lb 6 oz wheeled 22" bag
http://www.rei.com/product/837014/os...led-luggage-22 and it looks like a usable size compared to the 18", though I forgot to bring a tape measure.