The reason I chose to enable multistore is that I need individually branded stores for my "vendors" (their logo in the header) but they will not be adding/selling their own products. They will only sell the products I add; products and prices will all be the same for every store. The only difference between stores is that each product has a placeholder where that vendor's logo will be placed on the product once it is sold to their customers.
I do, however, have it set up so stores share inventory, customers and cart. I want customers to be able to purchase from any of the stores under a single login/cart.
Maybe there is a better way to do this? I'm new to Prestashop so any advice is greatly appreciated.