I regularly haul stuff both using panniers and at other times, my BOB trailer. The panniers are handy, enclose stuff well, but add a fair amount of side to side dynamic along with the weight. The BOB trailer is the weight, but a clean and easy pull; however, it does lengthen your profile, considerably and you have to accommodate that additional length in your riding. Either one will get you there! Isn't it great when there are no bad choices?