Should I meditate on one thing or just any sensation that arise?

As I research I am hearing people say pick a single point and focus on that. Then I hear other say you should just focus on the sensation that arise in your body. Personal one point focusing is much easier and I often get distract on if I should focusing only on the breath or move it to the inch on my leg or the numbness from sitting. Most people from the east that I hear say single point focusing more western meditator that hear say focusing on different sensation. Which is it?