Basically what Holy said
The AS 71 Has
*Core i7 3610QM 2.3GHz
*Nvidia GT 660M (2gb GDDR5)
*16gb DDR3 Memory (1600MHz)
*750gb 7200RPM Hard Drive
*DVD RW/ CD RW
The DS 72
*Core i7 3610QM 2.3GHz
*Nividia GTX 670M (3gb GDDR5)
*16gb DDR3 Memory (1600MHz)
*750gb 7200RPM Hard Drive and 256gb Solid State Drive
*Blu-Ray
The AS 71 is listed at 1499.99 on Amazon right now, and the DS 72 is listed at 2099.99 (But out of stock)
Difference is the Graphics card, the extra SSD, and Blu-ray.
On Newegg.com you can find this configuration:
NS 72
*Core i7 3620QM 2.6GHz
*Nvidia GTX 670M (3gb GDDR5)
*16gb DDR3 Memory (1600MHz)
*750gb 7200RPM Hard Drive and 256gb Solid State Drive
*Blu-Ray
This verson is on sale for 2149.99 (reg 2199.99) the only differece is the upgraded CPU to the 3620QM.
I too am about to purchase a new laptop and have been trying to decide on the NS 72 version or an Alienware m17x, which would probably be around 2300-2400 the way i want to configure. I think i'm going to go with the G75 though. It just seems like your getting a better deal and a good warranty. Also Alienware is running at about a month before they are shipping out, so your looking at end of May or first week of June before you would get it.
Asus G75VW-NS72
Intel Core i7-3720QM 2.6GHz
16GB DDR3 1600MHz
750GB 7200RPM + 256G SSD
Nividia Geforce GTX 670M 3G GDDR5
Blu-ray Burner
"Right...very creepy. Forget I asked."
-Alistar DAO