Jerky Mix Best Type Of Meat/technique For Beef Jerky?

Best type of meat/technique for beef jerky? - jerky mix

First, not only to Wikipedia, or Allrecipes and copying and pasting information. I was there and looked around. I ask personal experience.

I have a decent dehydrator and make experiments with jerky. I have mixed results at this time. I mixed decent flavor, but the texture of the flesh is not exactly what I want. I started with a simple steak sandwich. What is used for meat and what results you can not find?