We have had them in stock for a while now and they are selling really well. I did try them out and personally I quite liked them, they seem more flexable/user friendly and although the cans are larger than the HD25's you wont notice the size difference that much when worn. I think they are more comfortable to wear too. Downside for me is that there isn't a velour ear pad available for them yet........how ever I'm not sure if the HD25's velours are cross compatible as they look like they could be about the same size.
The bonus to these headphones I believe is the fact that they feature an active guard switch to protect from sudden peaks above 105db.
I would be purchasing a pair for myself wiithout a doubt but I do reccomend that you try before you buy and compare side by side as everyone has their own preference when it comes to a good set of cans.