Boy....that is a tough one. The best thing is to go to the dealership of all tractors you are interested in and test drive them. The biggest decision is if you need manual or hydrostatic. Loader work and lots of direction change you might consider hydro. Field work, plowing or mowing large acres geared will do. Then 4x4 or 2 wheel drive. If it is for loader work or on hills 4x4 will be best. My tractor is helpless in 2 wheel drive, or course I have lots of steep hills and a loader to put extra weight on the front thus reducing the rear traction.
I looked at Massey Ferguson but the dealer had no hydro units. It was ok but not what I thought was great.
Went to New Holland and fell in love with the blue one but it would not work for my land as it had a high center of gravity and was geared. The blue NH tractor looked really we'll built.
Went to John Deere but the dealer was a jerk. Their tractors were 5,000 more for a comparable tractor and they did not have any hydro units. The dealership just left a bad taste in my mouth even though the tractors looked tough as nails.
Manhindra did not even get a consideration due to the bad transmission reputation.
Kubota was a best fit for me. Had hydro units on the lot, they had a good reputation and got a 5 year insurance. I guess the biggest thing was the dealership threw me a key and let me try anything I wanted without supervision, even though I tried whatever I wanted at the other dealers. The L4701 was too small and felt unstable. Anything over the MX series was too large for my land. Settled on a MX5200HST.
In conclusion, consider what you need a tractor for. Pick hydro or geared, select the size you need, weight and HP, then go to the dealers to compare as you might change your mind once you get on one or talk to the dealership.