Best breast pump for working mom?

I'm going to be new to the whole breastfeeding thing. I unfortunately have to go back to work when my baby is around 6-8 weeks but I want to breastfeed as long as possible. Does anyone have recommendations on breast pumps that are the best for a working mom? 9-5? I've read that Medela is good as well as Ameda but I would like to hear from people that have actually done it! Also, when I am pumping will I be able to still breastfeed when I am at home and not use a bottle 100% of the time? Any tips are greatly appreciated