I bought my 4' KK 3-4 yrs ago and paid around $950.00 For that money I couldn't find anything to compare. I am no commercial farmer but I use it a good bit. It'll grind up virgin pasture here in Ohio clay based soil and never falter. I have ground up the old garden after the season and have never had a problem with crop remnants getting wound up in there. I do know one thing, it's beats the heck out of the old walk behind torture device/tiller I used to do the garden with. I can now have a beer whilst I'm tilling, pure heaven.
John
John