Not that this will change anyones minds to one direction or another, but I just wanted to give a short update of my life with the IE8's.
I purchased mine in 2011 and was quite dissapointed with what I got. The build was bulky and the sound very bassy especially for rock and metal. Quite soon I got myself W2's and have been using them since.
Lately I've started listening more to different electronic stuff including dubstep and some more ambient stuff and wanted to give the IE8's a go since I forgot the W2's at my friends place. I have to say I was quite pleasantly surprised with that I had in the drawer waiting for me. The bass response paired with the soundstage actually gave me goosebumps when I first tried it after the long W2 period. It was something that I've been missing without fully understanding it.
I listen this sort of music more for the feel good factor and almayst always on the go. In such use the IE8 is exactly what you want. If only the headphone would be a bit smaller, which would make the fit better I would say I love these. Despite the fit issues these will be back in the rotation and I'm really happy the investment hasn't been in vain.
The W2 will still remain my primary headphone for the guitar stuff, but it's great to have such options to pick from.
The part in bold is exactly why I love the IE8s (see for example my review in my signature).