The best Choice for tractors is the best dealer. Dealer support is key if buying new. If not then I would stick with Ford / New Holland, Case International, John Deere, Massey Ferguson, or Kubota. It is amazing how many tractors from off brands get sidelined due to a lack of parts after their manufacture exits the market. I work in the ag parts industry and it is amazing how many calls we get for Bison, Long, Escort, Hinomoto, Montana, and other brands. Save a few thousand up front, but a few decades down the road and your tractor is sidelined due to a bad water pump, that any other brand would be a $500 part. Sure makes the initial discounted investment seem silly.
On a side note, last weekend I had to help a friend separate a Bison calf from the herd because its mother died. Talk about a not fun experience. One beller from the calf and the entire herd is trying to mow you down. My friend is a well driller and all fence is 4" casing for posts, with six 1" horizontal schedule 40 pipes between them making the fence about 8' tall and a cattle panel welded in front to keep the calves in . And they still will hit it hard enough to bend it. We never go in the pasture unless we are near the fence, or are in a tractor. Bison are not to be trifled with.