C.O.
Definitely the dual pump. I bought a Medela when I had my son and used it for a little over a year. Then 3 years later I used it for over a year with my daughter. It was great to have the double. But I worked full-time and pumped at work. Whenever I was home my children ate on one side and I pumped on the other. Maybe you can look into renting a double and see how much you use it.