Be sure that you look at the ROPS bar height and compare that to your barn/garage opening for the models that you are considering. That height may help you eliminate some models. For me it was the Kubota
L2501 that just wouldn't fit without folding down or cutting down the ROPS, but the Kubota
B2650 would just make it. So that helped me decide between the two pretty quickly. I plan to build a large unattached garage in a couple years, and with that I can do taller doors, but for now I have what I have... And I'm not feeling the desire to play with the ROPS every time I want to use the machine.
Consider everything. Take your time. It's a major purchase and if you decide a year or 2 after buying new that you made a mistake, you'll likely loose thousands of dollars on the trade to move to what you should have bought to begin with.
My suggestion... Buy your first tractor used so that you can get out of it for nearly the same price you paid. Then when you know why you are selling what you thought you wanted but discovered that it's not enough, you take that first hand knowledge with you to go buy you brand new "last tractor you'll ever buy" unit. But it likely will not be the last, hopefully it will stick around long enough to pay it off before you trade it for the next shiny machine.
I bought my first one used a few months ago. I have a brand new
B2650 ordered now and I'm trading the used
BX25D in on it with no financial pain.
Just take your time.