If speed is a concern, then a double electric breast pump will suit your requirements. This is because you can pump milk from both the breasts simultaneously. For working mothers, it's the best option. On the other hand, if you want to save your money and are not concerned about speed. Then a single electric breast pump will suit your requirements. When it comes to manual breast pumps, it's worth only if you're going to use it once in a week or once in 10 days. Also, the quantity of milk will be very less since the mother has to manually pump the milk.