This has been a great discussion. The other thing to consider in your tractor search is where/ how you will use it, and how will it ride, i.e. wheelbase. I have 100ac. and a TN75DA, a 50hp cabbed McCormick, and a Kioti ck27. WB is 86, 71.5, and 66 inches respectively. I mow/ hay up to 60 acres ( after work, on weekends, take a hay vacation from work). The TN is 75hp and a great tractor, a little less hp than the 5083e that I was going to buy until the NH fell into my lap. If I had to have one tractor, one of these two would be it. Enough power for everything, wet clutch/ power reverser. No complaints except that the size makes it impossible to mow close to buildings and around obstacles at the house.
The McCormick is also cabbed, and comparable to a 4000 series tractor. I can mow and rake with it, square bale too. It is comfortable enough in the field but bounces some. It's a little cramped inside but still beats the heat and cold. Loader is too weak for the pallet work we do, and it doesn't have a quick attach bucket.
The kioti is a small mowing machine for around the house, pulling trailers, and has HST. I cannot take it into a field without getting severely bounced. I wound even drag the pasture with it. Plenty of hp for basic chores though.
Like many, I like having multiple tractors for a variety of reasons. If I was starting over now, I would get the 5083e and most likely the MF 1652 with the DynaQPS. I like having the over lapping capability and loader capacity, and the longer wheelbase for field work. Honestly, I am not a big fan of HST unless I am mowing the yard then that's all I want. I hate it on hills and I have many. That's just personal preference though.
The other tractor I would seriously consider is the Kioti DK 40/45 SE which has many great features and is often priced well below others. I have found the 12x12 on the McCormick to be a very useful transmission layout.
McC. and Kioti are currently for sale so I can upgrade...