>>1096852I would prefer a hybrid with a longer wheelbase and eyelets for a rack. I would never choose a backpack for commuting, always panniers, because I hate a unnecessarily sweaty back and the feeling of a backpack.
Longer wheelbase means you won't hit the panniers with your feet while riding. Also, you are less likely to have trouble with touching your front fenders with your shoes which is particularly annoying.
pic related my commuter/touring hybrid