And the HD 650 comparison too
I can't vouch for the 650's build, as it looks to me a bit plastastic, but I haven't used it so take it with a shaker-full of salt.
I've just read those links...horrible comparisons, very unfair because both DT990 and HD650 serve different purposes. Definitely feels like a paid review. As far as build quality is concerned, you don't buy these headphones to throw them around. All it says is how ham fisted beats users are