I didn't want to pay the money for Tretorns and used SpinFire. I regretted it. I went back to Tretorns. I had one set of Tretorns from 8 years ago. Finally replaced that set a year or so ago with new Tretorns since the original set lost their bounce. IMO, well worth it. Zero issues with my lobster. I'm also at altitude (2750') so YMMV.