I finally recieve my Mantis Honda, put it all together. Idle for a few minutes, rev it up and down with no load for a few minutes for break in. Then start the dethatching. The engine is so quiet it is great. It jump a little. It get the job done...decisively!!! I have no way to compare with the bigger and more expensive Blue Bird, but I think I like the Mantis much better, smaller, more useful in other stuff. The dethatcher tine look to be well build, should last for a while. I pull out so much thatch it filled up a whole 40 gallon can!!! My problem is the clean up. I ran the lawn mower, can't pickup all of them, rack, still can't get all, blower don't work very well, so now what, leave it?? Bottom line, the Mantis dethatcher work. I notice the engine does have to work. I think I made a wise decision to go with the 42:1 gear ratio Mantis rather than 35:1 Honda FG110. It need all the torque you can get from the engine. Hey Exact Rototilling, How's your dethatching go?? I like my Mantis, I am keeping it!!!