I would definitely recommend checking them out. They are basically a better HD 25-1 II. Might want to wait and see what the Momentum is all about first. Same price and same drivers as HD 25s?
I still have my e500. It has seriously rolled off treble. I almost wish it was harsh just to have highs. Since it practically disintegrated, I can't sell it. So, I'm stuck with it.
The midrange is killer though.