As the title suggest I found the XD100's to look and feel really good. The build quality is excellent for budget headphones and they seem pretty robust whilst staying relatively light.
For the money you can't really go wrong, but as a minority of people on the reviews have pointed out the bass simply isn't up to scartch. Probably just me being fussy but I was planning to switch from my old work headphones (which are only holding together because of being encased in brown tape) to these permanently but immediately the difference was noticeable. So I will probbaly make do with my crummy headphones and splash out for something a little more suitable.
Still, don't get me wrong. These are great for the price and the sound qulaity, if you're not too worried about the bass, is still pretty darn good!