Dell Inspiron, Studio XPS and Alienware products all have 17" models with better resolution than 1400 x 900. Configure the one you want with a 9 cell battery. Just don't choose model with a power hungry dedicated GPU. Really all you need to do is check the cell count on the laptop's battery. If you have a 9-cell and an integrated graphics card you'll get better than 4 hours easy on any laptop.