The specs show that the M-10MX doesn't even have 16 bits of actual dynamic range despite being a "24-bit" product. "24-bit" designations of this kind are like, if you're assigned a 24-page term paper in school and you hand in a paper with 10 blank pages, and you claim (or even fool yourself into actually believing) that you've met the requirements. Well, yeah, there are 24 pieces of paper there ... plus the staple should get you extra credit, no?
The unit also lacks any level monitoring--which would be quite important since its available dynamic range is so limited by modern standards, and since its inputs are configured for consumer-type devices rather than the professional condenser microphones that most people here use. The signals coming in would frquently be at (and sometimes over) the edge of what the circuitry was built to handle.
The M-10DX has inputs which are configured more suitably for live recording, but frequency response specs of +/- 3 dB are a clear sign of an extreme bottom-end approach to audio equipment manufacture. "We'll dress it up with color and beat everyone else on price; most people will never hear the difference--we hope."
If you say your prayers and brush your teeth every night, and you really, really want a certain piece of equipment to be high-quality even though it was built to be the cheapest that would be saleable by anyone with a straight face--and even though it was designed for another set of uses than what you're actually going to be using it for--then the laws of physics and economics will sense your utter innocence and step aside; the equipment will miraculously fall into a much higher category of performance than what the manufacturer is even aware of.
--best regards