I was interested in this machine and checked the web site, videos, etc. I rented one fromn a dealer(a dealer I have been doing business with for awile)who was selling them on the condition that if I was satisified I would purchase and he would put rental toward the purchase. If I did not like it, there would be a rental charge. I took it out and messed with it for a while, then decided I was ready to put it to work. The model I have is the 9hp motor. After using the machine on some yards that I bid to slit seed, power rake, all I can say is WOW!!!! This will be a for sure money maker for me. It was extremely easy to operate, even on unlevel ground. The part I could not believe was the short amount of time it took to complete the job. The Lawn Solutions Company has a winner here in my opinion!!!!!