Ozzy,

Welcome aboard. Good to see some 'young blood' joining us. My recommendation for buying Oliver tractors and equipment is get as much as you can, there not making any more. 

Seriously though, I think it is worth it to pay a little more for a tractor in good shape than to be constantly fixing one that has been abused.

On the subject of combines, there are still some good ones out there to be bought, but give it a few more years and the old ones are going to be hard to find. Between the high price of scrap metal, and all of the combine demolition derbies going on, they're disappearing fast. 

Post some pictures of your tractors and plow when you get a chance.