As I pointed out in the other thread, it’s the cables breaking that is a major issue with many ‘phones, so the Shures win by having replaceable cables. As reluctantwrinkly said, the sound quality is superb, but it’s worth pointing out that many earphones ‘burn-in’ over time, so a rather light bass will usually turn into a really deep, solid bass.
The Mee Electronics M6 ‘phones I talked about are very noticeable in this respect. When I first got mine I was reasonably impressed, but they were cheap, and I wasn’t that bothered. After a few hours, though, I noticed the bass getting deeper and deeper, and now the bass is almost too much!
The SE215’s are really well balanced, sound-wise, and really lovely to wear for long periods. Best to use the triple-flange eartips for best results.