Well, for some reason most people gravitate toward the old Ford tractors. They are not the best choice unless you get into the mid to late 50s with a 5 speed and live power. I have my brush-hog on a 640 and it is really awkward without live power and first gear is way too fast for tall, heavy weeds. On the plus side, it does handle well and starts first spin no matter how cold it is out. It would be a bit light for a loader although some do have them. Even the Jurassic 9N and 2N with the three speed transmission bring 2000-3000 and they are clunky to brush-hog with and not suitable for any kind of loader. I think the 641 (and 841) was the first one with 5 speed and live power, about 1957 but most of those models are a 640 (840) which does not have live power. Then later they went to the 2000, 3000, 4000, series and they are great tractors but bring a pretty good price. Avoid any of those with a power-shift. Of course the 2010,2020, 2510,2520, series of JD are great tractors but almost always with a big price tag. I have a 1968 3020 with a loader and it's been an awesome tractor and the JD store always has anything I need for it but those are more of a row crop and a lot taller than a utility type. The best tractors in the 3000-4000 range Are the IH, like 454 and 504, and that is with live power and power steering. Other good tractors are Massey Ferguson. Ones from the 60s or 70s with the little perkins diesels are awesome tractors. I always say that you should try and buy a brand that has a dealership nearby. I don't have a lot of wisdom on the 80s and newer stuff. Make sure and get something with power steering if you plan to use the loader much.