The factory American made ECUs are very good, I have never known of one to fail... the newer Asian made units are a different story though, hence the HEI module conversion being so popular. I presently have an orange box of unknown origin in service. If it outlasts me,and that’s probably not saying a whole lot, then I know it was probably an earlier unit. However, I am running the recommended ballast resistor... I know many people say they aren’t necessary, however those seem to be the same people who keep frying ECU boxes...
