Reading through the reviews for the TU-80, it seems theres a lot of grumbling that misses the point of what a tuner should do. Above all, it should be accurate and clear in the readings it gives. Too often tuners fail to do this. The reading wanders back and forth, never quite settling on whether the note is flat, sharp, or dead on. For a tuner, this is entirely unacceptable. A tuners job is to tell us whether or not the note is in tune. If the tuner cant make up its mind, then whats the point of having it?