Looser clamp is positive in my book. I think that was the biggest problem with the 1990, the clamp was too hard. I think I have to order the Amiron. I like Beyerdanamic you get a lot for a reasonably price. At least that was my impression with the DT1990.
I personally don't mind loose or tight clamp. I'm pretty tolerant of comfort as long as my ears aren't being squished. Yes you do get a lot for your money on Beyers, especially if you get them on sale.