The one you like the most. The reason is because it all depends on what your lookin for out of the final product. If your leaning towards something commercially minded, I suggest you find out what folks in your area are really into. In some areas, Kush or any variation thereof is really sought after. In other areas its more of a white-strain that is sought after.

In the end, shop around. Read strain descriptions. After you get a migraine headache and they all begin to look the same, you'll know you've done your research---lol.