The only other clip on tuner you should consider is the Snark Super Tight guitar tuner

I have used several different clip on guitar tuners:KORG pitchclip - useless, never could tune a guitar with thisSNARK - worked well, but plastic broke and became detatched from clipThe Samson CT20 tuner uses a clip with a double hinged arm on it

The clip is well built and has nice silicone pads so as not to mar your guitar or instrument finish

The best guitar tuner I have ever used and I have used a lot different kind .........J.III