A New Laptop??

Well I have been wanting a new laptop for a while.  With CES coming up I want something that is reliable and I can also game on.  I currently have a Dell 700M, it is a 12.1 widescreen.  The new laptops I am looking at are the Dell XPS M1210, and the ASUS A8Ja.  The Dell is the same 12.1 inches as my current 700M, and the ASUS is 14.1 inches, which still makes it very portable.  I am stuck between which one to get, I have looked at the Dell at their kiosk at the mall, but I have no way of taking a look at the ASUS.   The main difference between the 2 besides the screen size is the video card, the Dell has a Geforce Go 7400 256MB, and the ASUS has an ATI X1600.  So I am really torn between the 2.  Will the 7400 be enough to play games?  Is the 14.1-inch to big?  Am I going to like the ASUS if I haven’t seen it yet?  So I am undecided, any suggestions are welcome!