I must say I was keen to try these as I ahve the older SHQ3000/10 model which these replace.
Firstly, these have the same tech specs as the older model and are all but identical save for a few little changes. Instead of a straight connector you now get an angled one, along with a better cable seperator where the cable splits to your ears. This new one also features some reflective material to help keep you seen. Gone are the black and white ear hooks and instead there is now two tone grey. You also get a funky little bag/pounch to keep them in compared to the small hardsheel case. These are very well build and although I ahven't put it to the test yet they are washable to keep them clean and are sweat resistant.
I prefer earhooks for excercise and the hooks on these are adjustable for best fit which is really good. They come with three sets of silicone caps for the best fit in your ear. This is key and essentially to keeping the tunes flowing.
The set is very light and has a cable clip whcih I use to anchor the cable at the bottom of my t-shirt to keep the cable from bouncing up and down. And due to a nice long cable I keep my ipod shuffle in my shorts pocket.
Sound I think is good for this level of set, they block the noise out of the gym nicely and when a seal is made in your ears the sound is fine for your workout. However, it can be a pain to keep the seal in your ears, especially after a bit of a session once you start sweating etc and unless these are wedged in with a perfect seal then you may as well not be wearing them as you won't hear a lot.
Overall a light and well built set of sports headphones that sound great when their in. I dropped a star as getting the correct seal in your ears can often be a bit fiddly.