The models are great if you ask me, but they don't work for me as Ringwraiths. I don't agree with "GW Matt" and some of our members that they only wore black as a disguise in the Shire. Through the books they are mentioned several times as the riders in black, and not only 'till Rivendell. When they are described on their fell-beasts in the book, they are also described as dressed in black. These last two models only wear their black cloak as a detail and not as their main cloathingpiece. This image doesn't correspond (for me) to most of the latest models. And I especially don't like the made-up fluff of GW. The Witch King and Khamul could be worked out (as they did), but the other ones should have kept unnamed and all should have been modelled in black robes, maybe a minor detail but nothing like this.
So in short, I'll keep using (and loving) the first 9 Ringwraiths made by GW.