try the inspiron 14R. just customise it to have
core i5 480m
Ati mobility radeon HD 5650 1 GB
4GB DDR3 dual channel RAM
320 GB HDD
The downside are that it has only 14" screen and 320 GB HDD. If u can live with that then its a great config.
Also try the HP dv4-3016tx. nice config but the price is unknown. i called the HP customer service and they told its a discontinued model. They dont know anything, its a sandybridge model. Do inform me if u get the price.