I'd have to say, the Echo Urban rear rim is the closest to an 'indistructable' trials part I have ever come across. I had one on the Leeson Thumper, then on my Echo Pure, then my Czar, then the Pitbull, and then I sold it, still in pretty good shape, the only reason for selling being I couldn't fit it in my Phase with v-brake mounts. Same rim, different bikes; was in all of my street/natural training videos. Seriously, seriously tough stuff, and for that much strength the weight is no sacrifice at all. Gets my vote any day Rich