I picked a pair of these up today. Here's my initial impressions, although I really don't have a great deal to add. First a bit about me. It should be noted that I am no audiophile, but I know what I like and I rarely find it. I am 50 yrs old so my ears are not what they used to be (too much time in front of a stack of Marshalls in my younger days). My music interests are rather mundane from Adele to NIN to Bob Marley to Bedouin Soundclash to Kings of Leon. No techno or death metal or dubstep. Previous headphones have been Superfi 5 Pro, Sennheiser CX500 and Klipsch S4i.
My source is my HTC Amaze 4G using PowerAmp with the EQ set to flat. Most of my music is either ogg vorbis or flac with some mp3's.
I actually went in thinking of picking up the House of Marley Zion's (don't hate on me) when I saw these for about 30 bucks more. So I opened the box while still sitting in the parking lot of FutureShop. I fit them in my ears reasonably quickly and gave them a listen. On a funny note, at first I thought, "wow, I'm hearing things I've never heard berfore... and I don't really like what I'm hearing." Then I realized I still had my car stereo on and could hear it leaking through.
Anyway, initial impression was like everyone else. Too much bass and way to muddy. Overpowers everything else. So I took them home and played around with the fit a bit. Finally figured out how that loop thingy works and found a comfortable fit. I took the dog for a walk for about an hour. I found that the bass began to clear up a little bit by the time my walk was done. I have them burning in now and am still undecided about whether I'll keep them. I do find them better than my previous headphones and am hoping that with burn in they will be substantially better.
A couple of things about them. I found that the fit with the loopy thing was somewhat uncomfortable at first but I think I've found the right adjustment. Although one ear bothers me a bit still. Also, the remote buttons work somewhat on my Android phone. I can pause, skip to next/previous, but cannot contol volume. I haven't yet tried receiving a call.
I realize that this is not as technical as tinyman's review, but I'm just an old dude giving an opinion. Go easy on me.