What's wrong with a neon tester? It's not the tool that is at fault, it's the way it is used and interpreted. They are only misleading if the user doesn't know that they are sometimes (indeed, often) unreliable. As an previous poster commented, the result from the neon tester lighting up on contact with the back box prompted everyone to advise calling in an electrician, and quite right too. Without the neon test result the OP would be probably still messing around looking for a loose neutral with what could be live earthed parts. So that neon tester may well be a life saver. I'll keep mine in my tool box along with my test lamp and proving unit etc.