You can look at Joker's Build Quality Rating for the RE272. From the looks of it, it's not badly built at all. IMO the E9 will actually be overkill. I don't know about the RE262, but sometimes I can't even use my Fiio E11 with my very sensitive IEM's. Even at the lowest volumes they're still too loud, and when I go even lower, the dreaded channel imbalance prevents me from hearing my music.
7/16/12 at 2:05pm