I carry two. Luggage Works Stealth 22". It's heavy but bullet proof. I also use a MYGOFLIGHT PLC Pro. It's kinda pricey at 200 bucks but has pockets for EVERYTHING including padded compartments for your iPad and a 13" laptop. They also have great customer service as I had the zipper fail on one of the main compartments. All I had to do is snap a couple pics to send them and two days later I had a brand new, updated bag with no questions asked.