Tried most of the pedal tuners in the market; Boss, TC, Peterson, Planet Waves, Korg, etc.
If money is not an issue, the best of the lot will be the Turbo Tuner from Sonic Research
otherwise, very close second place is the Polytune 2.
add: whenever I am setting up my basses, Adjusting intonation etc, I am using the tuner on the Eventide H9. as quick as the Polytune's and as it shows the numerical values of the tuning adjustments, much easier for adjustments.