My Shure SE425s split a couple of days ago, sadly rendering them inoperable. Decided to spruik for SE535s and, after some initial problems getting the right seal (seems Shure has changed their rubber sizes) I am absolutely blown away. Read a lot of reviews talking about the differences between the two pairs (the 425s allegedly being more accurate and less warm) but these things are better than I believed possible. Even better than my AD900s, which to my ears were as good as headphones can get. Yes, there are probably better canalphones but, given the lack of ability to audition, I decided to stick to ones I knew I found comfortable.