Organization Design

In my life I have had quite a few jobs. I have had jobs with all of the basic forms of organization designs. I worked at market basket for about year, and they have a mostly a fucntional or U form of organization. I think this form of organization is good for very large companies like market basket. But also its much more impersonal, because the main manager of the store barely knows the lowest employees, like the cart boys. I also worked at a small liquor store, which was a family business. This business didnt really have a organization design because of the fact that it was so small. The recent job I have is Cirlce K, which is a small gas station convenient store. The store itself is very small but it is owned by a much larger corporation, Macs Convenience. This corporation has an organization desing similar to the divisional M-form design. They have many small businesses and stores that are all related somehow. With my experience I have found working at the circle k most enjoyable. This is because it is not a small family business, but it is owned by a large corporation. The store itself is aslo small so the manager knows all the employees very well and we all know each other very well.

What type of organization design do you think works best? Does it have to do with what type of company it is?