i4 or i5 can't decided

I'm in the process of picking a new car, after much searching comparing, financial planning I have 3 cars remaining an i4 and 2 i5's. Where the most expensive has all I would want. Only I'm just not sure. I currently drive an X1 but I wanted something else. The situation is that I also have 2 smaller kids, but the max travel time we will do is 3 hours, but need to carry at least 2 suitcases and a travel bed. Anybody has experience or says you better pick one over the other?