There feels to be a lot of changes in DKS over the original and I often find myself thinking "that wasn't there or that didn't happen" the last time I played.
Overall, the original felt unfinished were as DKS feels complete.
I have no problems with the graphics, I find them beautiful and atmospheric, the shadows in particular are very believable.
There are barrow loads of games for sale that are not worth your time never mind your money, but DKS is not one of them. I feel DKS is worth every penny 10 times over and would highly recommend it to anyone looking for a game they can get themselves lost in.