I've had a Peterson Strobostomp (grey version) for 3 years now, and i gig 2/3 nights every week. It's never let me down, is fast to tune, and crazy accurate. I have 1 guitar with Buzz Feiten intonation, it tunes that brilliantly. For me the best bit is the Peterson 'sweetened' tuning pre-set's for standard guitars... they just sound better and more in-tune than with another tuner. It's also great for intonation and has lots of pre-sets for open strings and notes/harmonics at the 12th fret.