LL O11 Dynamic is strictly for watercooling. Nothing else. It's not a versatile case and too much use of glass make it prone to dust and fingerprint detection. Moreover, the airflow only works in a specific manner (shown by Hardware Canucks in one of their videos).
NZXT Elite 510 on the other hand is highly versatile as you can use it for air and liquid cooling. NZXT engineer their cases well, so you don't have to worry about airflow. And then there's the added accessories such as the 2X Aer 2 RGB fans. Moreover, NZXT has much better customer care in India than Lian Li. Break anything? Just contact them outrightly.