Summary: I listened to these very carefully, and although I almost fell in love with them and their very businesslike appearance, I did feel like an idiot for wearing something that's all about its looks. Swapping between these and similarly priced earphones I found that while they're inoffensive, they were doing nothing out of the ordinary besides looking like a million bucks, and their writeup on Senn's site and the packaging seemed to back this up.
Summary: I bought these a few weeks ago, and like the other reviewer mentioned, they don't do anything too special. They are fairly detailed for an IEM at this level, and provide globs of bass. The inline iphone remote is especially nice. There is quite of bit of microphonics.
I will be keeping these as IEMs to use at the gym.
Summary: Having lost my earbuds I was happy to find these. Shame you can't buy them in pairs but with 8 they should last my for many years, so factor that in when you consider the cost. They come in a nice container (all the way from the US in 5 days!) which is useful to keep them clean. I got 6 black and 2 white which was unexpected but not a problem (they will be in my ears so who cares!). They, of course, have the cross piece to avoid damaging your ears.
Summary: I was so excited when these headphones turned up, and was gutted when they broke. These were rubbish. After about 3 months use the headphone jack sheared off in my Ipod and i could only get it out with pliers!The remote control would not work with either my ipod or my iphone 5 - wasn;t happy about that. For the money these are being sold at I would expect the life of the product to be greater than 3 months, as these were only used for approx 1-2 hours a day.
Summary: I thought that I had ordered the large ones but made a mistake and clicked medium. I sent them an email and they replied immediately and told me to send them back. They then sent me the size that I actually wanted without any quibbles at all, they also kept me informed all the way. As for the ear tips, they send a little box with plenty in plus a few spares that fit another set of sennheiser's that I own. They fit perfectly and cut out a lot of outside noise.
Summary: The box contained eight earbuds exactly as advertised. They had the blue backs and the horizontal cross pieces and were indistinguishable from those that came originally with my CX870s. Strangely the box also contained another six earbuds of varying shapes/designs/colours without the cross piece. I won't be trying these with the Sennheisers as there would be nothing to stop the diaphragm guard falling into your ear.
Summary: These are definitely good quality and do seem to be exactly the same as the originals the headphones came with. Having lost the previous large ones Id been struggling on with the medium ones moaning about how much better my cheaper headphones sounded. Now Ive got the right size back it transforms how they sound!