Tom you are asking such a loaded question that it is impossible to answer what BEST is until you tell us what jobs you are going to do, and to what extent you are going to do the jobs.
For example, if mowing or tilling are going to be done extensively, then I would look at a light tractor to avoid rutting the lawn and compacting the soil. My choice would be a small light machine.
If pushing trees over is a big task for you then I'd want a big heavy tractor. Same is true if I wanted to do extensive box blade work, big and heavy.
Now if I had a mixture of both, then a middle weight, mid-size machine would fit the bill nicely.
Some might argue with the examples below, but these are my thoughts:
Mowing -HST transmission + small & light
Tilling - HST transmission + light
Blade work (box or grader) - heavy
Post hole digging - no difference
Snow blowing - no difference
FEL work - HST transmission + balance is more important than sheer weight, often but not always, heavier tractors have more capacity, so the question comes to HOW MUCH capacity do you need.
Spreader/spray - no difference, but if it is on the lawn, then I'd favor light
So figure out your tasks, then find the tractor that has characteristics that are going to fit. If this is your first tractor, I would stick with a brand in your area and find a dealer with a good reputation. I'd also suggest paying extra for a hydrostatic transmission.