i have two choices, asus ac53u (128mb flash, 128mb ram) or asus ac53 (8mb flash, 64 mb ram), both routers have mimo and i need to connect two devices wirelessly. now the ac53 is cheaper but the less ram and so much less flash compared to the 53u is making me afraid. so i want to ask do flash memory and ram matter? especially flash memory? because theres a huge difference.. one has 128 mb flash another just 8mb flash.