I have Arkel tailriders for 2 of my bikes. They are wonderful, and hold a surprising amount of stuff. I also have 2 sets of Arkel panniers. Haven't done any touring yet, but they do quite nicely on my trips to the Farmers Market or just to the grocery store, or to the beach. I do not regret my investment in Arkel products. I have the red tailrider on my orange bike, and a black one for my white bike. The only complaint I have is that the insides are black - so it's easy to miss something in there. A lighter color would be much better, though with heavy use I guess it might get dirty. Still I'd take that over black interior any day.

Arkel, are ya listening?