What is the difference between Audi A3's VVT engine and FSI engine?

I'm looking to buy a new Audi A3 and I'm curious about the different engine types offered. Could someone explain the differences between the VVT engine and the FSI engine? Which one would be more suitable for everyday city driving?

The VVT engine in the Audi A3 stands for Variable Valve Timing, which means that the timing of the engine's inlet and exhaust valves can be adjusted to improve performance. The FSI engine, on the other hand, stands for Fuel Stratified Injection and uses direct injection technology to provide better fuel efficiency and power. For everyday city driving, the FSI engine would be more suitable as it provides better fuel efficiency and smoother acceleration.