Ideally suited for household use and for amateur guitarists - as long as you use it for acoustic guitars. The device detects always the played string and agrees pretty much. The display makes a very good because high quality and accurate impression. Reconnecting - enable - off you go. The guitar is tuned quickly thanks to the good feedback from the display.
Note should, however, that such Tuners are basically really good only for acoustic guitars. With electric guitars it will be difficult for clip-on device because of the lack of sound body to detect the vibrations. Since it is better to resort to tuners with microphone or audio input.
For all acoustic guitarists but there's a strong buy recommendation.