As one who made a living trouble shooting and doing failure analysis on electronics, mostly instrumentation, I have to agree with John emphatically. It is hard to argue with years of data proving the reliability of solder joints and crimped joints over connectors. There is overwelming statistical evidence of better reliability when crimped or soldered/welded connections are use in liu of the type of connectors used in most RC. Of course what I worked on demanded 100% reliability as human life was often at stake if a failure occured.