[Notebook/laptop/tablet Pc Buying Guide *updated 2011*]

I'm getting a laptop this weekend from Nebraska Furniture Mart and I need a bit of help deciding which one to get. It's mostly going to be used for Photoshop, schoolwork and some light gaming. I'm not worried about hd space since I primary use my desktop but I need one that has good speed and won't take a long time to load up the programs I have to use.

The ones I was thinking about were:
http://www.nfm.com/DetailsPage.aspx?productid=37408267

http://www.nfm.com/DetailsPage.aspx?productid=36816866

http://www.nfm.com/DetailsPage.aspx?productid=36496453

http://www.nfm.com/DetailsPage.aspx?productid=36496453

Could some one point out the main differences between these and which one offers the better deal for the specs it has.