ABR has done a group test on aluminium panniers, i think they have been very kind not to upset some companys. Metal Mule and Worldbeaters are 10/10 for build, and finish. Alpos, Heavy Duty, and g+g and stahlkoffer are at the bottom of the pile.In the middle are Zega, Hepco, Krauser, and Jesse. But of course price has a major part in the choice. Buy Cheap buy twice.