BlackBerry?  iPhone?  Who's better?  Who's best?  Who cares!  Neither does you a damned bit of good without service.  And who controls that?  Good question.  The answer -- wireless tower operators!  Three companies dominate the industry.  American Tower is the biggest.

American Tower owns 26,000 towers around the world and leases space to carriers, who sign multiyear contracts that come with annual price escalators.  Because of zoning laws, American Tower controls large territories without threat of competition.

With no end in sight to the data consumption, it's a no-brainer that AMT is poised for growth.