What is the best type of steak to use for making beef jerkey?!

What is the best type of steak to use for making beef jerkey?

I just bought a new dehydrator and i want to make beef jerkey. what is the best type of meat to use. the booklet says to cut as much fat off as i can, but doesn't state what kind of beef to use.

I 've had great success using flank steak. You want to stay away from any "fatty" cuts, as this is what causes spoilage in the finished product. By fatty I mean sirloin,brisket,chuck, anything that is heavily Marbled or otherwise requires cooking for a long time at low heat.