Calling Model 3 more efficient is dead wrong. Model 3 is a smaller and lighter vehicle and gives very good mileage for only carrying a 74kwh battery, however, it also sounds like a trash can with wheels when you're driving at highway speeds. I'm saying this after owning two of them since 2018. Extremely noisy and will give you a headache after long drives. Not to mention my weekly one way trip of 235 miles was too much for my Model 3 to handle and I would reach my destination with only 5-15 miles remaining. One time it even dropped to 0 miles. That does not happen in a. Model S because it's more efficient.
Model S is simply a better car-it gives more miles due to it having a bigger battery, however, it is extremely efficient and in fact way more efficient at highway speeds than my awd and performance model 3s ever were. I got a model S and make weekly drives of 235 miles one way so basically 470 miles total and I cannot emphasize on how comfortable and smooth the ride always is in a Model S. Model 3 or Y can't even come close to it.
My average wh/mile usage in 3 was around 290-320 per trip.
For Model S - it's 215-265 wh/mile on the same trip and doing 71mph at an interstate highway.
Get a 3 or Y only if you can't afford a S or X. Just because more people buy a 3 it doesn't make them better vehicles. After owning both I would never go back to a 3 or even a Y. You got kids so get something comfortable, get something that doesn't give you a headache or tinnitus due to terrible road noise. Give em the smooth comfortable and efficient ride of a S or X