Silas,
I can only say, I have similiar speakers, Mirage OM9's, OMC2 and an OM200. I use the Outlaw 755 to power them with my Pioneer 811 acting as a prepro. There is an an ICBM between the Pioneer and the 755. Bottom line is I love the sound of the 755 with the Mirage speakers. As you would expect there was a definite improvment to their sound after adding the 755. It seemed to open them up even more then normal. Now you might get just as much improvement or more from the Parasound. I can't comment on that.
Good luck in whatever your decsion may be.
Peace, LTK