You could do a lot worse than the Gateway NV55S05u for a solid RAM-hard drive combination and an all-around decent processor in a 15-inch laptop, provided you can live with poor battery life.
You can dive into the various subcategories here for detailed suggestions for every need and budget, but on this page, we present the current laptops that are our personal favorites, because of style, power, value, or just because we like them.
A large-screen laptop with very good performance, the Gateway NV7802u is an attractive choice for home or office.
It may not inspire, but for less than $600, the Gateway NV5807u is a great value as an all-around 15-inch laptop.
As shown: $599
Check manufacturer's site for availability