First, forget about the "one pass" idea for any implement. That might work if you are on a plot that has been well established and you just need to work some seed in on an already prepared seed bed. I started with 15 year-old, heavily thatched prairie grass. You will make many, many passes with ANY device to prep that type of terrain for planting. I suggest the plotmaster because it has the weight you need to really get deep and turn over the soil. The going rate is $3000. They modified the unit a year ago, so if you are looking at a used one, make sure it is the "new" model. The way you tell is the new model has a wider stance between the wheels than the original model. They did this because the original one rocked side to side a little too much. The new model has wheels attached to a square tube that slides into another square tube and held in place by 2 bolts. In other words, the wheels are removable, but remain attached to about a 1 foot long piece of square tubing. Hope I haven't confused you. Any new model being sold would almost certainly be a "new" model, as they quit making the original model a year or more ago. The electric motor is also improved on the new model to make it a little faster to raise and lower the unit.
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