It's only good for using ground beef (not steak strips). You pack it with the spiced beef, put on the top, squeeze it out. It comes out consistently, making it great for working with ground beef.
I'd like to try working with flank steak and doing actual strips, but I don't have the time or motivation to experiment with flank (which ain't cheap either); I'm happy with the consistency for now of the ground beef - it ends up looking like the processed jerky you get in the gas stations, but really the only processing is taking ground beef and shaping it.
I do 160 degrees for 3:30 hours, then let it sit a bit then confiscate it. If I have only added spices (no liquids) to 93/7 beef mix (meaning 93% fat free, as opposed to, say, 80% for burgers), then at those settings it usually comes out perfect in terms of shape, texture, and doneness.
The gun makes it easy to experiment with flavorings. Once a week or so I can quickly make up a batch, and I don't have to spend hours screwing around with flank steak. I like chewy "pure" steak, but I'm happy enough with this stuff if I can do it quickly, so that's what I work with for now.