Eating saturated healthy fat does not end up in your bloodstream.
Eating carbohydrate does end up with unhealthy fats in your bloodstream.
This is the latest article from Steve Phinney and Jeff Volek and it continues to indicate that eating fat is not the problem . Eating carbohydrate is.
Eat the hamburger and skip the bun.
http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0113605