Laptop for college students 2013

I am planning to buy a laptop for my project needs, which is the best laptop available for my needs? I am looking for a very cheap one with lots of memory and speed and light weight, I will carry this to my college every day.

Dell is the one laptop I would recommend. There is no such config like high end with low cost, 2GB RAM would be good enough for most of the productivity apps. How ever higher ram like 8GB would definitely save time