Had SE215s for almost a year now and they're great. Nice sounding and very comfortable once you find the tips you like (triple flange silicone for me).
Cable is staring to go a bit, getting sound dropping out in one ear sometimes when I move my head, although to be fair the cable has taken a quite a beating. Currently looking at a replacement.
Bear in mind, most IEMs like these isolate sound very well (in fact once you have music playing you might as well be deaf to everyone else). If you're using them on roads where you want your ears for traffic etc. then you might want to consider this.