Got this mostly for its polyphonic pitch shifting mode to detune my guitar half- or full step down. Overall the pitch shifted sound is of good quality with no artifacts for full step down, but it has too much latency, which makes it unplayable, therefore polyphonic pitch shifting has only limited utilisation.
Other side, detuner and harmonizer modes are of decent sound quality. Harmonizer has virtually no latency at all, pedal itself is very easy to use.
Pedal lacks dry/wet control. No problem for polyphonic pitch shifting - only wet signal is coming out, but harmonizer and detuner has no control over the depth or volume of processed sound, whitch makes this pedal one-trick-pony, despite of its three sound modes.