Heh… I think those cans were responsible for me finding Head-Fi. Coming from working on the road w/ touring musicians, I was in the market for some new headphones and the Marshall brand name + stylish design caught my eye. However, I wanted to know if they really were up to snuff in terms of audio, so I fired up Google and ended up finding Head-Fi, with plenty of feedback and reviews.
Long story short, I didn't buy them. The reviews were successful in convincing me there were better options for the price. That said, I haven't actually heard them, and this back when they were originally introduced. They may have gotten better since then, or they may be exactly what you're looking for. They sure do look awesome, but then again so do a lot of others that are also praised for audio quality, and for comparable (or less) money.
If you don't want to wait for people to respond here, you should be able to find some reviews & feedback through the search function.