Long reach staplers are fine, but this is the bomb! With LRs you should staple before folding. This one you fold first and the stapler helps you line up the zine crease with the staple! Also if you line up either edge, it places the staple perfectly.
Recommended by the zine creator in this video: https://www.youtube.com/watch?v=Cs3Rkl7OAfM. With this type you want to staple before folding, using that red clip to set staple depth.
This is close to the one I have (a Westcott I bought at Michael's). Excellent choice if you do collage and are always on the lookout for bits of images to use.