BF Calculations

When filling out my info on an internet website to calculate my BFC I came across something interesting. When it gave me my totals, it gave me it the U.S. Navy calculations and the YMCA calculations. Which one is more accurate and I should pay attention to?

Is the website I recieved this on

You need to use calipers, not estimators. Read these articles:

http://www.t-nation.com/readTopic.do?id=460414
http://www.t-nation.com/readTopic.do?id=460416