I, Like challenge have been flying r/c for many years ( 34 to be exact
) I have never lost a plane
due to range issues with PCM gear. If you have ever been to a sailplane contest, you know that those pilots
fly quite high. Range has always been out of sight with the exception of some of the recent park flyer equipment.
I would strongly suggest that after a crash, you have your receiver(s) sent it in to be sure they are OK.
Why would anyone take the risk of flying a model with suspect equipment. Personal Injuries can occur, nevermind the loss of the model.