I have the Pioneer and they are insane.
They are big and look silly- but you will find yourself
taking them off to check that the room speakers are tuned down.
I love letting other people try these- the response is usually- WOW!
I bought the IE7 a few days ago and they are the most comfortable pair of IEM I have ever worn. The sound good, but not as good as I thought they would.
(I could still return them and get the Shure's for a $100 more)
How do the IE7's compare to the Shure 530 in sound and comfort?