if used would be ok take a look at a John Deere 4040, 4240, 4055, 4255, 6410, 6420(would have to be high up in the hours but I have seen some in your price range) or perhaps even a 5603. I recently saw a VERY nice Ford 8000(120hp i believe) go for $5,800 at auction. You should have no problems stumbling accross a good used Case IH, Massey Ferguson, or a late 70's-early 80's model International 66 series either. These tractors in the horsepower range you're looking at are out there by the plenty for some good prices, just have to keep an eye out.