It's perfectly great, but the Pitchblack tracks just as fast, and is MUCH easier to read in darkness (aka any stage I've ever been on) due to the red/green bit. Unless you're a luthier, or hell bent on perfect intonation, save your cash.
I think that I am just going to go ahead with the pitchblack. I really like the pitchblack+, its just big and has more features than I am likely to use in the near future. The display is definitely easy to read on a dark stage, I was worried about the turbo tuner's display TBH.
