I'm looking to upgrade my Bose IE earphones. After upgrading my home headphones to DT990 Pros, I think it's time to step up the bar on my portable listening. Basically just looking for a more detailed sounding IEM. The thing I am NOT willing to sacrifice from my Bose earphones is the bass. Even more would be great. I don't really want to spend upwards of $150.
A couple that I've come across are:
Ultimate Ears 500
The one thing that's quite important is fit. I can never get the bud type earbuds like the Ultimate Ears to fit in my ears. My Mom has a pair of Monster Miles Davis Tribute earbuds and they can't stay in for the life of me. That's the main reason I went with the Bose IE earbuds, they fit in my ears beautifully. The SE215s look like they'd stay a bit better as the drivers seem to sit in your ear if I'm not mistaken.
Any other suggestions would be great.