The Polytune sure is a popular tuner and the reasons why I have bought the Ploytune 3 is cause1. Polytune model 3 comes with a built-In Bonafide buffer, so running longer guitar cables will not degrade your signal. This is like two pedals in one (Bonafide buffer + Polytune 2)2. It has a Strobe tuner as well (apart from the Chromatic) which gives you 0.02 cent accuracy for highly accurate tuning.3. Excellent display which you can see even in the sun and it has an ambient light detector that automatically adjusts the light intensity.4. Good build quality just like any other T.C. Electronic pedals.