I've only tried the Bose QuietComfort 2 & Goldring NS1000 (which I recently bought).
Bose is certainly better with sound (can't say it's 5 times better, considering it costs 5 times that of the Goldrings if you buy it from play.com) and much better with noise cancellation.
The problem with Goldrings I have noticed, is that they leak sound. Also, the case in which they come doesn't have a strap. I usually carry only my Bose headphones with me when I'm flying (& check the rest of my baggage in) and the strap comes in very handy.