I have a couple of them for pushing long pieces through. All models have the basic structure, they just add on a couple of accessories, in particular, the wide foot. I never use it, really awkward. You can get a 1/8th foot which is really handy for narrow cuts. I always try to keep the widest part of the wood against the fence to reduce the chance of kickback. Early on with my old table saw, I tried to cut a warped piece of ply and it kicked back, hitting me in the center of my chest. It was bruised and sore for months. They come at you at about 100 mph. Won't ever try that again. Just get the Gripper, I don't think I've ever seen a bad review on this or any other site.
The more I do, the less I accomplish.