Tener que o Haber de - Cual es mejor?

Tener que o Haber de - Cual es mejor?
 

Tengo que hablar con mi padre.
He de hablar con mi padre.

I learned the "tengo que" in basic Spanish and now am looking at the auxilliary verb "haber". Both can be "I have to" but which is more common usage?

Learning the words is easy but knowing how things are really said is hard.

Gracias, Bob Ritter, Pensacola, FL. USA

Using the meanings you applied, they are interchangeable, but 'tener que' is used in everyday Spanish and 'haber de' has practically fallen out of use.

Gracias Rusty.