I have the SWM, very happy with them. Haven't had both so can't really compare. Haven't laid it down or otherwise 'tested' the bars. Hopefully it will stay that way!! My bike is kept outside rain or shine (with cover) except for the winter. No signs of wear. If I remember correctly there is at least one thread doing a comparison of the various bars and it talked specifically about these two models. Differences were minor and mostly cosmetic.