Instacart has same day (3 hour and 1 hour) delivery options. Freshdirect is next-day. As a startup founder, this kind of flexibility is great. Instacart also has a slick mobile app, which is a more pleasurable shopping experience.
FreshDirect is next-day at BEST. I've tried to order and have been limited to 2 days later at odd hours. I suppose that's a result of their success, but certainly something to be aware of and optimize against.
