looking for laptops with these specs:

1. Brand either lenovo, asus, dell or toshiba
2. maybe lenovo thinkpad L540, dell inspiron 15R or toshiba c50t-a007
3. Tech Spec's: intel i3 3rd or 4th gen, 2-4 gb RAM, 15.6 inch screen and window os (don't want touchscreen and any hybrid laptops)
4. Upgrade Ram To 4 Gb
5. Willing To Consider Other Alternatives ? : Yes

Pls pm me the list of available models and best price. Thanks