Thanks again for the replies...I made up my mind, and decided I would order the DX Graphite, maybe I will wait until the end of the month if I have the patience, just to see if they release the same firmware as on the kindle 3.
I was kind of surprised people don't necessarily use the DX if they have the choice (I mean in a situation where both are usable), I thought it would be natural to go for the bigger screen, but I guess it's a matter of taste. The (relative) heaviness of the DX is mentioned a few times, but the 30 days return policy would allow me to return if it really bothers me. Since I'll read mostly at home, it shouldn't be too much of a hassle, and if I find myself wanting a smaller device for taking with me everywhere, well christmas is not that far away
