You are one of my hero's. vs You are one of my heroes.

Some examples from the web:

• Guess your world's only big enough for one hero.
• What of my hero's feelings?
• It looks like Krypton gave us more than one hero.
• Since I was a little girl, I've had exactly one hero.
• Gentlemen, this threat is too great for just one elderly hero.
• Earth doesn't have just one hero anymore.
• This is just a one-hero fire.
• The hero icon works differently, because there can be only one hero. When you paint the hero, he moves from his previous position to wherever you release the mouse button.
• The lives of 420 workers and residents were saved today by Excelsor, the country's number one costumed hero.
• And this one is the hero.
• [ARTURO] My album was enriched with new adventures of my hero.
• He's sort of my hero.
• You're kind of my hero today.
• No one was a hero. No one was a hero.
• Fellas, this one's not a hero.
• One of my mentors in life was Norman Borlaug, my hero.
• You're kind of my hero right now.
• In a world on the verge of graduation, one hero stands against evil.
• I ate nine pies and a meatball hero in one hour. That's a record.
• to a contaminated stale such a one as Hero.

Some examples from the web:

• Honoré Dutrey - one of my heroes.
• The CEO Gabrielle Cosgrove is one of my heroes.
• Donald link, you're one of my heroes.
• Carl Sagan was one of my heroes.
• I've got a compassionate D.A. who I would call one of my heroes.
• I want to call him after one of my heroes.
• You're one of my heroes.
• He's not one of my heroes.
• And the first story is about Charles Darwin, one of my heroes.
• I'll tell a story about one of my heroes.
• Sepultura-founder, Max Cavalera, is one of my heroes.
• He's one of my heroes.
• I'll make it. I told off one of my heroes today.
• This Hulk has spent the week... demonstrating his honest desire to serve humanity... as one of its heroes.
• We cannot kill one of their heroes.
• Gus, you can be one of those heroes.
• She's one of my personal heroes.
• P.J. Moffet was one of my literary heroes.
• So this is one of Derek's heroes.
• He is, for Europe, one of our unsung heroes.