Hi technogirl,
I use an Arkel Commuter from time to time and it suits my needs fine. Its relatively easy to take off and put on the bike. My wife has Arkel touring panniers and a trunk rack that she loves too. Arkel makes wonderful products, and although they are not cheap, you will not feel cheated. Consider
the bug, perhaps.
Serge (no relation to the Serge @ Arkel, I swear)