The H910, H949, and Quadravox plugins differ from the Pitchfactor algorithms in several ways:
The DSP in the H910 and H949 plugins are more fiathful to the original hardware units than the PitchFactor alg (due to less cpu cycle restriction), and Quadravox has a much more flexible UI in plugin form in addition to enhsnced DSP.
The presets will not be the same as the Pitchfactor. There are in fact far more presets in the plugins as well.
I would recommend demoing the plugins so you can get a feeling for how they sound.
