I'd recommend the Oliver 4240 plow. It could be a 2 or 3 bottom plow, so if you find a three, it can be converted back to a 2 bottom. It could be set up as a 12, 14 or 16 inch cut, could be mechanical or hydraulic lift, and wear parts are readily available, using replaceable shares, shins, landsides, etc. The 4240 was made starting in the mid 1950s.

The Oliver had some advantages, they had more clearance, (the height from the frame to the ground) and a greater rake (the distance between the rear of the first bottom and the front of the next), which all allowed for better trash flow. They also had the famous Raydex bottom, which pulled easier due to its 'radius curve'. I don't know if any plow from the 1950s will handle today's stubble, but I'd bet on a well adjusted Oliver. 

Here in our sandy soil, it was common to pull 16&quot; bottoms on 18 inch spacing, and it works just fine. I have a couple of plows set up this way, and when I hit a heavy clay knob, the bottoms want to trip. (This is on a newer White plow.)

I have talked to people with heavier soils like you mention, and they say that running a bigger bottom on a narrower cut gives them better results. Many of them had 18 &quot; bottoms set on a 16&quot; cut.  My father used 12 inch bottoms with 16&quot; shares in plowing competitions on a 4240, and had very good results.

If your soils scour poorly, you might also consider using a slat bottom.