In the hobby 15 years and have never had a receiver fail. If you isolate the receiver from vibration, and put a piece of tape over the crystal so it can't fall out, and run 2 receiver packs and 2 receiver switches, you've got a bulletproof setup. If you crash a plane, I wouldn't want to stick that receiver in another plane. The receiver components are fragile enough to get damaged in a crash. I have seen batteries and switches fail, so redundancy makes sense for those components.