What is the best laptop to purchase...?

for $800 or less? My mom sent $800 for each of my kids for a laptop for Christmas. But I want to make sure I get them each one that is reliable, has long battery life, lasts at least three years and can handle online games and has a built in web cam. Saw this from Walmart: http://www.walmart.com/Dell-15.6-Inspiron-1545-Laptop-Bundle/ip/11151033 and these from Dell: http://www.dell.com/us/en/home/laptops_great_deals/fs.aspx?refid=laptops_great_deals&s=dhs&cs=19