Which Asus g75 model should i get?

Hello,
i have decided that i wanted to get a new asus rog g75 laptop but not sure which one to get for the money. here is a link of 3 different options which one do you think is the best for the money?
1) http://www.newegg.com/Product/Product.aspx?Item=N82E168...
2)http://www.tigerdirect.com/applications/SearchTools/ite...
3)http://www.tigerdirect.com/applications/SearchTools/ite...

is the gtx 670m worth it over the 660m
and the dvd or /blue ray option worth it?
i was thinking about replacing the harddrive with a good ssd(os) and a least a 1 terabyte 7200 hd for storage should i go ahead and spend the money for a g75vx model? trying to stay around the 1500 budget give or take the value