I know it's hard to buy EHP-606 now. I just bought EHP-700. It's great! As you say, it is very slim and very convenient to carry. The external face of it is nearly the same with EHP-606. What's better is that it can decode DTS! But the weak point is it's not NMT player. Whatever, that's enough. Because i just use it to watch HD movies.
Hope elektron to be better and better! And expect you to bring us more higher quality and standard players!