www.luggageworksonline.com
I have used the 22" stealth bag for 3 years and it held up fine. That worked perfectly for a 4 day trip and it even held up being thrown in and out of the back of an RJ 4 times a day. I now have the bigger one (27" I think) and it works great for about 7 days. I did get the ABS plastic framed one, as it is much lighter than the metal frame.
The neat thing about their luggage is that it is all modular. You can buy a small duffel bag or computer bag and they all clip together. I have been very satisfied with all of their bags I have.