I own the regular POG. It is awesome, though I admit I'm often hard pressed to find more use for it yet. I find I'm using it more on my, gulp, guitar
and it is amazing how much it sounds like a pipe organ. Used subtly, I can get a very close approximation to a 12 string Rick as well, and it also has a sub-harmonic octave (which I don't believe the micro has) that can give you cool synthy, techno dub-type sounds. But it does open up some new sonic terrain for the bassist as well, and best of all there's none of that poor tracking fartiness you get on lower notes like I used to on my Boss OC-2.