Those who has MC seats tell you those are must have. Those don't have tell you optional however many times you ask. This topic is discussed so many times and still understandable. I was in exact dilemma.
When the car is released, I went to dealer and sat in MC and Non MC for an hour time. I have no practical benefit of having MC given my height and body.
The best way to nail this down is to try them with your family and feel it and I am sure you will come out with a decision.