As I'm sure many of our peers have previously stated: There is no such thing as an overall best tractor.
Tools and machines are built to do specific tasks. There are some more general purpose tools that are able to do more than one specific task; such as using a claw hammer to beat out a dent, or an adjustable crescent wrench for different nuts, but there are different specific hammers for nails and for body work; and you should use a box or socket wrench before grabbing the adjustable one. You wouldn't ask what's the best wrench for hammering nails with, or the best lathe to weld with; the same criteria applies to tractors.
A tractor is a general purpose machine, a general purpose tool. It's first and primary purpose is to pull things. (In fact, the first tractors didn't even have wheels, they where an engine on skids and pulled a harrow back and forth across a feild for plowing using a rope or chain.) Pushing stuff, and powering other machines is secondary.
Now the questions you should be asking are:
1. What are the tasks I need done that I think a tractor is necessary for?
2. What attachments to/equipment for that tractor will I need to do those tasks?
3. How much power will I need to run the tractor and those attachements?
4. How much weight do I need? What's the maximum weight I can use?
5. Will the tractor meet the full range of needs?
5.a. Should I consider getting two or more different sized tractors?
(10 hp 2 wheel drive lawn & garden tractor, 500 hp giant farm tractor with all wheel drive and triple tires on each wheel, etc.)
5.b. Should I consider getting a different specialized vehicle? (Backhoe/loader, excavator, forklift, bulldozer, etc.)
The answers to those questions will determine the optimum range of power and size of the tractor. And even single manufacturers will likely have several different tractor models that will be acceptable solutions to those tasks.
Only after you've answered those questions do you start figuring affordability: owning, leasing, or renting, and the manufacturer and model, reliability and maintenance.