...NP300E5Z-S07IN? Most features are common.
Some different features are :-
Processor
Asus - Core i5 2430 - 2.4 Ghz
Samsung(both) - Core i5 2450 - 2.5 Ghz
Display
Asus - 15.6" Glare(Reflective)
Samsung(both) - 15.6" Non Glare(Anti-Reflective)
USB
Asus - 1 x USB 3.0 + 2 x USB 2.0
Samsung(both)...