First burn in impressions of Xiaomi Piston 2.0 is that these are not hype train performance, but legitimately high end performance. Sonically they are rival the MMDT in bass, lush mids, and solid but not overly sparkly or sharp treble. The sound signature is eerily reminiscent of my Miles Davis Trumpets, or my old Coppers. Can't really compare them to the M200, as they are a completely different sound, but they do have better bass refinement than the M200. They completely demolish my other single dynamics (VSonic GR99LE, Sennheiser CX150, and Philips SHE3580). In terms of refinement, bass quality and quantity, and the detail and clarity of the mids, they just are on a different plane than these others. Ok, I will point out one similarity to the M200, and that's the more laid back treble. This is not a extended treble with BA type hotness. This is a treble with decent extension, sweet timbre, and works in concert with the overall presentation, without trying to be forward. These are $100 IEMs. I'm not going to say they go above that price range, or compete with the GR07, because they don't, but they definitely compete well with the RE-ZERO, RE-400, Monster Turbines, and UE 500. For $24.00, these are a massive steal, and the crown jewel of my single dynamic collection.
Thanks BeatsGuy for the headsup on this thread!!
Can't wait to get mine then!