I've had the Boss TU-2 chromatic tuner for about 3 years now. Its a really simple pedal, but is one of the most valuable in my set up. I bought mine used, but would have been willing to pay full price for a new one now knowing how valuable this is. It gives you the option of simply stepping on a pedal and having your amp muted and a great tuner at your foot. I haven't looked much into the different modes but it seems that you have the option to set your specific tuning (although I am not sure of this). I have only used it in chromatic mode as it allows me to tune each note to whatever I want it to be. Its also quite convenient to have your amp muted while you tune, and is really essential if you are playing live. I also own the daisy chain needed to power other pedals and I suggest that you pick that up as well if you get this pedal. It powers up to 8 other 9v powered pedals if you have the daisy chain and power supply, which is a really convenient aspect. I've also used the similar Fender made tuner and it doesn't do it for me, the lights on the Boss are easier to see in the dark on stage. The price I would say is about right, as the pedal is built extremely tough, like all Boss pedals. I plan to keep mine as long as I continue to play.