I'm looking for a used rototiller- walk behind style. Not sure what HP, what brands have a good name.... I do want it to go as deep as possible. It's for turning pasture into veggies and then of course tilling in manure. I have reed canary grass so I need to till deep just to set it back long enough for me to begin controlling it by hand! Thought I'd ask here first before talking to a dealer. BTW- I have a Mantis/Little Wonder tiller. Now don't get me wrong I love it- but I need something better (stronger/wider and deeper) for this project. THANKS for any ideas!!