I have used a Bluebird Slit(?) seeder in the past. I really didn't like it. It had spinning blades and dropped the seed on top of the beat up soil. It seemed more like a dethatcher with a seed hopper on it. I do know I liked the Ryan Mataway much better. This was what I thought a slit seeder should be like. This machine actually created a slit for the seeds to drop into. I have read that the revitalizer is quite good too. Around my area it is hard to find anything but the Bluebird seeder. My question is this: Is this really how the Blue bird seeders are supposed to work or did I get one set up for dethatching with a seed hopper on it. Is there a set up for an actual slit seeder set up that has disc like blades instead of dethatching blades? The Ryan-Mataway I rented once did a lot less damage to my lawn and I couldn't even tell anything was done to it the next day. The grass grew very nicely though. I just can't find a rental place that carries one.