I asked my NH dealer about this... he actually said to stay away from the NH tiller... his view was that they were overpriced and/or under-engineered. He recommended a Kuhn... they have some pretty heavy-duty units for around $4K. Not sure if he gets a better commission from Kuhn, but I am interested to hear other opinions as I still haven't bought a tiller. I think discs might be a better way to go... but it depends what you're trying to grow.