Finally i have chance to try both Malaysia (Exynos) and SG (Snapdragon) versions.
Overall, both perform very well. However i found Exynos version is smoother and faster than Snapdragon. For Snapdragon, i can feel a bit delay when press home button or press photo gallery in camera app. First i thought it may be due to the lag demo unit, but i found the same feeling when i try other 2 units in different shop.