lol, why dont u ask the question anyway? i just ordered a 1720 a few days ago for $1267 shipped to my door, the specs were:
Core Duo 2.16ghz
256mb Nvidia Graphics Card
3GB of RAM
then, after a few days from ordering i was checking dell.com top customer picks and the 1720 was offered for $1057 shipped PLUS 1 extra GB of ram which makes it 4GB, but the processor was .16 slower, which means it is 2.0 instead of 2.16, and from experience the .16 will never be noticable and you save $200 and get 1 extra gb of ram, the rest of the specs are all the same as the first one.
so i cancelled my first order and i ordered a second time... couldnt be happier.