The Rocky Mountain bags are pretty mind blowing... built like *tanks*. I really like the details, including the tapered opening, the mounting system, and the super heavy duty everything.
Also, Dusty and the crew took extra time to get me set up right at closing time on a Friday and it's really appreciated. In over 15 years of experience with this company, they have never failed to go the extra mile on customer service.
I personally also really like that they have liners and bags - if its wet out, I like being able to lift the liner out and walk away with dry gear inside, leaving the outers on the bike. They fit the big KTM perfectly.
My daughter approves, too!