as a proud owner of a DX since 3-4 days, I'll suggest you this:
http://www.amazon.com/M-Edge-Latitud...sr=8-2-catcorr
I spent hours on the forums searching for the perfect one, and now I have it - this is it!
I mostly like the fact that it is not simply a cover - most of them dont keep the dust-dirt out: it is sealed, and well padded in case of fall.
And you choose the color too!
alessandr