I haven't used the pitchblack plus, but I have the pitchblack, and it's an excellent tuner. Very accurate, easy to use, and super-convenient (it mutes output when it's in use, and is TB when it isn't). The only problem I've had is a problem I've had with any electronic tuner, which is the tuner getting confused by an abundance of overtones. That's easy to get around though :)