I tried re0 only with nano 2g before duo was stolen. They have very good clarity. Hot on treble but still i remember how some instruments sounded exceptional on them.
They can be a gud match with E7 though never tried. But they are very sterile for my taste. Someone who needs to analyze music or love treble and transparency should look for them. Bass is ok. Mids is the area where i feel re0 needs to improve. Not impressive in mids. Absolute orgasmic in highs.
However i was never able to put them in ear for long hours(not more than 1.5 hrs). I cant stand extended treble and like rolled off treble.
RE1
RE1 are quite different from RE0 not entirely.Different side of same coin. Lush and beautiful mids. Rolled off highs, smooth, controlled bass. Cant comment on imaging and soundstage as ppl say they really need an amp to shine.All i can say about re1 is that they are what re0 are not to an extent. One cant go wrong with any. It all comes down to personal preference. One can have both in his audio inventory as they really complement each other well.
However if we can find a combination of both in a single iem, it wud be a very good. Hope RE262 will fulfill my expectations
Thanks for reading amateur review
have a good time and enjoy ur Music