I have tried it all and I let my images lead the way. It's the best form of elimination. I'm a firm believer that a winner among all the images in anyone's portfolio most certainly emerges. I've shot everything from Products like apples and sunglasses to live action like Metallica and Football.
My love for portraits far exceeded everything else over time but experience in Photojournalism was a plus anyway because even if you are in the most controlled environment, it still boils down to The Decisive Moment. Henri Cartier-Bresson was a genius.