I have had a Zircon cheapie for 20 years. It finds lots of stuff. Just a row of LED's none of this LCD crap. One thing that is wrong with it is that it doesn't know if it is a stud or a pocket door that is lurking behind the drywall. Those pocket doors don't slide well with a
3" screw in them... or so I'm told.LOL , Glad to hear that I am not the only one that fixes doors so that they don't move. My dad's side garage door needed to be rehung so that it would not bind when closing. After repositioning the jam I used my finish nail gun to reapplied the trim and a couple of the nails went into the door.