Nice review, I just recieved these a while ago in the mail and I'm already in love with them.
Several years ago, from the SoundBlaster Live! days, Creative have been pretty darn brilliant when it comes to sound quality, in most of their hardware. There are a few bits here and there (X-Fi portable player, for example) that aren't so good, though generally they tend to come out with quality stuff.
I had a look at this order a few days ago, and didn't think much of it due to the cheap price (what you pay is what you get, etc.), shocked that the sound quality is absolutely amazing - not to mention the most comfortable in-ear earphones I've used.
I've got to hand it to Creative, they've bought out yet another great product.