... and still one of the few iems I can fall asleep with my head on the pillow.
Very informative - important point for me. Any chinese iems you can sleep with? And also this - did you buy B50 at Adorama? International shipping is expensive though.
You mean the size of the housing? I think the W40 is slightly larger. In terms of sound quality the SE215 is not even close to the W40 in terms of tonality, balance, detail retrieval, soundstage, and on and on. The SE215 is fine for the price, but it's bass is rather tubby and bleeds into the recessed mids. Very comfortable and good for certain genres of music like Hip Hop and Rock, but it can't touch the W40.
Also very informative. I can live with 215 just fine, but I am curious and want to try an upgrade. I guess W40 gen2 is on top at the moment.
Thank you for your input so far.