Buy the V8S since your priority is moving the family around in comfort rather than outright performance. I will say this though - the car is beautifully finished but it is not very focused compared to a Ferrari or Aston Martin but it has a smoother ride than either. When I say focused, I mean if you point it in one direction, it will not prove as focused as the other two makes but the Bentley is a GT so the emphasis is different.