Pros: SQ, comfort, isolation
I had these a while back. I'd fallen in love with "canalphones" as we called them, thanks to Sony's "Nude EX" back in the MiniDisc days. I went through a couple pairs of them, always losing the silicone tips. I then tried a pair of Philips with a somewhat similar design that didn't work for me at all. In exasperation, I found these and gave them a try. They were a bit pricier than I was used to ($40, I think), but the sound quality was quite good -- way better than the Philips and slightly better than the Sony ones. I would've been delighted if not for the fact that they started falling apart after a few months. First the "chrome" ring would break loose and spin freely, then the rear shell would start falling apart and finally the strain relief broke free. I never left them loose either -- always wound them carefully and tucked them into the Timbuk2 pouch that held my iPod. I was pretty gentle on those things so it was a big disappointment the way they fell apart
It WAS good while it lasted, though!