Bought a 107D last year, so far I've only used the tiller attachment and its a huge improvement for me. I mainly use it for raised beds and weed control once things are growing too thick or tall for the 40 hp tractor. Never had a good tiller like a Grillo or BCS, it blows away the common box store machine by far. I want to get the berta plow next. I guess I do at least 2 acres with the tiller, probably more. I don't break ground much with it since I do have a 6' pto tiller, but I have tilled some really tough rocky and hard chert like stuff and it gets the job done. The 107D lets me pack in my rows tighter, I do have a nice 4x4 tractor with all the attachments, but the 107D still saw lots of use last year. Trying to avoid all chem weed killers so, I use the 107d to lightly cultivate things. Love how it is so easy to turn and control in tight spots, the tiller is great for small seeds, makes a very nice and fine seed bed. Love the tine speed.