Educate me on older drills.

Looking to find a seed drill, and I am looking for something older (read; cheaper). In the past I have used an old Deere drop spreader, ands three point broadcast spreader. Looking to seed mainly oats, and brome with an oat nurse crop. Going to be doing between 20-80 acres a year for the time being. What should I look for? Grass boxes? Hoe vs. disc? Type of closing wheels? I will be looking in the $1000-$3500 price range. Here is one I found near my in laws, would it work decently? Looks like a hoe drill with small seed and fertilizer boxes? http://ift.tt/1lsnSe3

Educate me on older drills.