Stocking up on diapers

Hi ladies, so I want to start stocking up on diapers, nothing crazy, just a few packs, different sizes, each time I go to the grocery store, which is about once a week. This is my first child, I am due Feb 2017, and honestly, I am clueless as to what are the most recommended brands, and sizes to stock up on. Could y'all recommend or offer any advice on this? Thanks in advance!