I have driven three tractors. Two I bought...
1) Ford 8N - Made a couple laps around the barn on a friends old 8N. My first drive on a tractor... Basically a slow joy ride.
2) Kubota B8200 - My first tractor, and primary workhorse around our 5 acres. It's a great tractor, and a good workhorse.
3) Farmall A - My second tractor. Mostly I tow a trailer with it, either a small utility trailer, or a 16' flatbed when we go in a parade. The Farmall has much more character than the Kubota, and is my favorite. But, since I have no attachments right now, it does not do anything that challenges it in the least.