This is correct the sound is more "natural" and less synthy per say from a pog and both track very well.. some will say 1 or the other is better and more likely cause they own that unit but either one you can't go wrong but for what your going for I gather sub n up would be the likely choice due to a little more "natural" (big word here) sounding. Polyphonic pitch shifting will always sound "digital" in some way or form. It's up to the user to hide those "digital" artifacts withbither effects to make it more "natural" but yeah you won't be dissappointed with the sub n up.I realize that pitching up a bass alone will always sound somewhat artificial and not like a real guitar, but as far as I can hear from the demos the Sub'N'Up has a less synthy or organ like character, like a cleaner pitched up signal, compared to the POG which I think it is fair to say has a slightly organ or synth like character to it, which of course can be cool in it self if that is what you are looking for in an octaver.