I've been using my DC Flight Line Duffel for two years now, checking in at least 200 times annually. The case is in like new condition, has been packed to the limit most of the time, and shows no signs of wear. I've used several major brand rolling cases prior, and none have come up to the quality of this item. If I improve anything it will be to go to the next size up, but this one fits at the airport check in.
This is a great carry-on bag, never had any issues with airline gate agent. Very lightweight, well designed, smooth. The only con is the side wall - there's none. This saves a lot of weight, but it also means if your bag isn't packed, any weight you put on the top and the bag would cave in...and would impact contents. Any stiffeners or padding would really help to make this bag really great.
The best carry on bag so far, I have a 5.11 rolling duffle and wanted something smaller. This was the best choice.
I'm a big 5.11 fan and like the look and features of this bag. However, as a business travel bag it won't work because there's no "suiter" feature on the inside of the the main compartment flap for hanging a suit or button-down shirts. Do this on your next version of this bag, and I'm in!
The DC Flight Line roller is by far the best carry-on piece of luggage I've ever owned. Extremely light weight and well constructed. I travel over 150K miles per year and this case has never failed! The grey color is very easy to spot in a sea of black bags as well.