S.:
•The kind of pump you may need depends on whether you will be home or working and how well your baby picks up on breastfeeding at the beginning. As others have said, you may not need a pump.
•The difference between hospital grade pumps and personal use pumps is not the amount of suction; it is in the smoothness and shape of the suck/release curve the motor creates (which equals comfort & efficiency). The hospital grade pumps are the gold standard: if you have a baby who can't nurse at the beginning, it's best to start with a hospital grade to ensure you have gotten the best start possible. There are no "do-overs" with establishing a milk supply. Most likely the hospital will start you pumping, giving you the tubes and bottles if you need to pump at the beginning.
•If your baby is breastfeeding well and you need to be away regularly, a personal use pump is more economical and will probably last you through as many babies as you want to have. Medela is the best known because all the hospitals in the Denver area use Medela. You can't go wrong with a Medela, but there are other options.
If you want to see/touch and learn about options before you deliver, we have them all on display at Bosom Buddies. We do rentals too, but as someone else pointed out, there are other places who rent besides hospitals: My Sweet Beginnings, Nurture.
suep
bosombuddies.com