1. Preferred Brand: Asus or Dell
2. Budget: Below RM2.2k
3. Usage : Mostly web browsing, office work, watching movie, general usage
4. Preferred laptop/screen size: 14/15 inch (as long as the weight is suitable to bring around.

I actually have 3 models in mind:
Asus A455LD-WX146H 14" (i5-5200U, 4GB, 1TB, NV GT820M, W8.1)
Dell Inspiron 14 5448-20452G-W8 (i5-5200U, 500GB, 4GB, AMD M265, W8.1)
Dell Inspiron 14 3443-20452G-W8 (i5-5200U, 500GB, 4GB, NV 820M, W8)

Other than the general specifications, what are the difference among these models? (eg battery, sound, build quality)

Thank you very much.