I use the Kirkland bag which is often referred to as the $99 Costco bag. I bought it because it was on sale for $69, the return policy was great and my old bag was stupid heavy. Costco stopped carrying it, but I've had it for 6 years now and it's still running strong. Big advantage is that it is super light and worked just fine for 6-day international trips. Before that I had the 22 inch Luggage works back, which was ridiculously heavy. It was also overkill for someone who didn't commute and rarely flew on RJs. I still have a Swiss Gear rollaboard (and backpack) that my parents bought me back in 2001. That stuff is nearly indestructible, so I'll check them out when it's time for a new bag.