I am surprised no one remembered my posting about my M22 Ninja mods and findings I did awhile back. Problem is the Ninja XO is set lower than the stock M22 so it obviously sounded different. I still haven't found any scientific evidence that show 'audio quality' caps, cores etc, improve sound quality. And in my experience with my Paradigm Monitor 11 and later a Studio 100 comparison to the M80s, I couldn't hear much difference between the Studio's and the M80s, while the Monitor 11's lacked the extra detail the M80's have, so I can now presume Paradigm is using low quality XO's as well, going by the logic I have read in this thread.
This hobby is very simple, listen to what your ears are telling you and nothing else.