i don't rate their construction in terms of the nasty plastic but sound wise they are good I guess. I can see why people like them, and I can't deny it's indestructible plastic quality, nasty that it is. I was going to sell it but never got round to it.
The Momentum is my favourite out of the lot and I only had them only today! I like them for their comfort, easy to drive and build quality. First phones with real leather, not fake, but genuine English lamb leather. It is sweat and water resistent. I like the metal head bad with the quality leather stitching at the top. Love the in line remote and the little turn/lock on the end of the jack. It also sounds like a pair of open phones yet it is closed. Sonic quality it is very open and neutral, which i show i like them.
The Goldring I only use for long haul flights, because of the noise cancelling feature.
The HD600 is boxed up and never used because I use the HD580 more.
The HD580 needs new cable and new pads as I've had them 10 years now. (the cable in the photo belong to the HD600)
The HD-25II, not using them at the moment, I did at once point when it was snowing because it was my ear muffs
The HD495 is my least favourite because they don't stay on my head, very easy to fall off and the sound is the weakest of the lot.
The Sony is the bargain of the lot for its RRP price but it is a home listening pair of headphones. Very accurate, neutral and also comfortable.
The Momentum is nice because it can be driven by a phone easily, but i am not sure how it would stand to day to day use on the train and stuff.