I went for the 2000's, mainly because I got the money off because of my 1000's breaking again. Theyre a lot more comfortable, and sound pretty good still, and being metal and all that jazz they shouldnt break as easy, the hinges look and feel a lot more solid.
I'd go somewhere where you can try a few different pairs, see what you like best, if your using something a fair amount you want to make sure your happy with it.