Originally Posted by
HB.Watermelon
This might be a preference thing. But, I'm currently using a messenger bag for commuting, and hate it! It shifts too much when riding. And, all that weight makes me feel top heavy. Do backpacks dig into the neck when riding? Are they comfortable? Or, are panniers the way to go?
I would echo a previous poster -- a well designed, properly fitted messenger bag shouldn't shift -- cycling couriers have used them for decades, and they can't all be wrong.
I ride with a backpack, because I ride to public transit, and need to carry my stuff for half an hour each way off the bike.
As to comfort, again, the key is finding a backpack that fits you -- they are not all created equal. You might have to literally try a bunch to see what works. Many hear seem concerned about the sweaty back, but I guess I fall into the category of "I'll sweat with or without, so why go without?"
I have not tried bicycling panniers, but I rode with motorcycle saddlebags for many years, and loved them. They were not convenient to carry off the bike, however.
Obviously, this is a question that relates to your style, needs, situation, etc... You need to figure out what works for you!