u Shaped Kitchen will give you more storage space and counter space

It often depends on the space you're working with. A designer would be able to help you maximize working space while making the kitchen stylish.

I like my L shaped with a small island. Often when there is a design dilemma about too much wood or too much white, it is a U shaped kitchen overloaded with cabinetry. Do not fill every wall with cabinetry just because you can. If you have a pantry, you may be able to decrease the number of upper cabinets no matter what configuration you chose. A clear wall gives more space for some art, shelves or piece of furniture like pie save or hutch.

For a 2 person kitchen, L-shaped with island. For a 1 person kitchen, U-shaped- and keep it fairly small.

both have its uses as per available space