I've owned both over the years. The spike wins almost every time. The plugger just rips up the yard. And to do the plugger, you need a balance of a moist soil, not damp and not dry. Too wet and the plugs stick to the lawn tractor tires or turf tires on a compact tractor. Too dry and the plugger males the lawn into a dust bowl. My spiker looks like Ninja stars. This way, a triangle wedge fits into the soil at 3-inches deep. AgriFab makes the seeder/feeder spiker for lawns that work remarkably well.The article describes thoughts on the advantages / disadvantages of Spike vs. Plug? If you read it carefully https://grass-killer.com/reviews/best-lawn-aerators/, then it will be clear to you whether to buy or not. I hope I helped you in this matter.