Bottles, breastfeeding, working mom

I've started to look at registries and things we will need. I'm 13 weeks now. I am planning on breastfeeding but I will be back to work (40 hr. weeks). Is there a breast pump, storage and bottle system that you like most? I've seen that some bags can convert into all (ie attach to the pump have a cap for storage and then click or be placed into the bottle without pouring). These seem convenient. Any suggestions on what worked for you as a working pumping mom?