The biggest problem with risers is the very long bolts required. When coupled with very strong bars, and a crash, the force transmitted through those strong bars can break a bolt(s) off or worse, trash the upper t-clamp . A good case for cheaper, more bendable handlebars. You can get home with bent bars.... not so great if the bars are no longer attached to the upper T-clamp. You think new bars are expensive, try buying a new upper T-clamp!