I can't offer any help on the Maggies, but I own a C-5xe MP and think it is a very nice sounding player. It is audio only but can play any silver disk format. It's sound is clean and detailed but not harsh or digital-edged. Definitely a good deal in my book. I also own the K-XR but not the M-XRs. I'm not sure what you found disappointing about the amp's internals but they are anything but. From the solid aluminum billet chassis on up, these are SOTA amps with tons of power but plenty of finesse. If my speakers weren't self-powered I would likely own them.