As far as fit is concerned, I found these to be the best fit for my ears. The 598 basically gives the same natural sound, concert feeling audio that I felt with my 595. I have a wide foot and my toe just barely touches the edge. I couldn’t use it because it was broken. So other than a warranty replacement [if possible], I probably wont be buying another pair. What remains to be seen is how well they hold up to the wet clothing, e. The sneakers looked adorable (looks just like the famous maker’s shoes, which I own 3 pairs), but there was not enough padding inside, so I returned them. So I had to remake it with string and that eventually worked. Should last a bit longer, and dont tangle much. It does not produce sibilance in my experience but will definitely reproduce any sibilance present in the original mix.