The NF Audio NM2+ are a really intriguing IEM. Technically they're better than any DD I've heard, outside maybe the Rhapsodio Galaxy 2, which I hated. They're fast, punchy, textured, detailed, wider than any DD I've heard and have very accurate imaging. Build and fit (for me) are excellent. Price is 170. Their frequency response very much errs on the bright side, with a mid bass hump that makes the lower mids warm rich. Cellos sound great. There's a bump around 4k and then again at 8k. Eartip rolling helps, but the narrow tips that tame the brighteness also make them less detailed and wide sounding. At the beginning I got tired after listening for a few hours. Some non acoustic tracks were unlistenable. However through brain and/or driver burn in I don't notice the brightness nearly as much. There's still some tracks that are too bright, but for acoustic music they're excellent and they are enjoyable for about 80 percent of the music I listen to overall. I tried a micropore mod to tame the upper mids, but it muted the treble too much.