Since you're coming from a Civic, you might lean towards the Hyundai Alcazar, purely for its stronger performance and relatively sportier gearbox. Its suspension also feels stiffer than the MG's, making it handle a bit better.
The MG Hector Plus, on the other hand, is smoother to drive, albeit a bit dull, and delivers better ride comfort due to its soft suspension. Neither car has a particularly spacious third row of seats. Hence, their last row is only good for occasional use.
If you will use the third row more often to ferry adults, you could consider the Mahindra XUV700, which also delivers stronger performance than these two.

