Here!
I got the HD25-II and the Shure SE530.
I gotta say, I love them both!
The SE530 is more upclose, and compared to the HD25-II, a little rolled off on the highs, but the mids and lows are to die for.
Even straight out of an iPod Nano fatty. And they become even more amazing when amped.
And a pro for IEM's is that they don't mess up your hair, you don't have something on your head all the time and they're small!
But the HD25-II.. They are straight from the iPod great sounding! Different, but great sounding!
Soundstage is wider, they have a warmer presentation and have more punch to it.
Downside is that they don't get alot better with amping.
Both have great isolation, I use my HD25-II for mixing in the club, and yes, it gets loud in there.
The SE530 is even better at isolating, but hey, it's plugged in your earcanal, what else would you expect
Seriously, When you like the HD25-II, the SE530 won't dissapoint!