I haven't tried the IM02 so I'm not sure what it sounds like. What are you looking for in comparison to the BA200?
From reading your description it sounds like a Sony EX1000 but the fit on those doesn't work for everyone and they might be hard to find these days.
Either I guess. The SD-2 is definitely a little warm of neutral but I like it quite a bit.
Dunu earphones tend to be pretty tough and the DN1000 sounds very good. It's at the upper end of your price range though.
The JVC FXT90 was pretty well-made and reminds me of the Silver Bullet in some ways, but sounds better overall. It's $100-ish.
The Shure SE215 is not really an upgrade in sound quality compared to the Silver Bullet but it's well-made and has detachable cables so if something goes wrong with the cord (as it often does) you just replace the cord. Lastly, the ATH-CKM500 is comparable in sound (albeit quite a bit bassier than the Silver Bullet), cheaper, and should be pretty durable as well.
P.S. keep in mind that it might be more cost effective to replace a $60 IEM every year than to buy a $200 one and replace it after two years.
Thanks so much for the help. After looking around a bit I decided to order the Dunu dn1000 from mp4nation. I read there were reviews going both ways about them (mp4nation) but I took the chance (I live in Sweden and it's difficult to find any site that ship them here). I hope they dn1000's will be more resilient and durable and also looking forward to an upgrade in sound quality as well! Thanks, Peace
Edited by opis - 3/14/14 at 11:32am