consider the long term, parts and reputation of the unit, reliability of the unit,
my main two tractors are a 1970 and 1971 tractors, almost 50 years old, both with over 10,000 hours,
the dealers have come and gone many times, so I would look at company longevity, if there is money in it there will be dealers, (yes parts most likely will appear over priced, but getting parts is better than no parts, and having to junk a perfectly good unit for some thing simple, or having the unit so devalued that is not worth much more than scrap,
unless your made out of money, and can trade and keep in a warranty, the things above will be like gold,
I would look in to the more popular models, more reason to keep parts made,
believe me some time you will want parts, (knew a guy who had to scrap a combine because they could not get a water pump for it), THey said they tried every thing including calling over seas, to dealers,
comfort and ease of use, weight and power, there are 35 hp tractors, that are so light that are not much more than a garden tractor, do to light weight, and can not pull any ting, so one needs a goo ration of power and weight,
if mowing is the plan enough PTO hp to have a mower wider than the tractor, having to have a mower less than the wheel width, is a PIA,
is it such it will deal with a back hoe, (sub frame units are best), loader here is a tricky part enough loader to do the job, but no so much you kill the tractor using it,
(at least in the past) most AG loaders are not dirt rated, there manure rated, in other words there light duty loaders not meant to deal with stress of hard compacted dirts or the weight of solid soils, but for loose lighter non compacted materials,
Cab or no cab, 4 wheel or 2 wheel, (smaller tractors will benefit much with 4 wheel, especially for loader work),
My 1970 jD 4020, 100 hp farm tractor, with a round or square bale on the front of it, in snow there is enough weight off the rear end that even a few inches can make it difficult to get tractions, (wo wheel drive) but is still a 10,000 pound tractor, at one time we had the loader on a old MM U could not go in much snow with a bale on it 6,000 pound tractor,
have considered on of those two wheel trailer with a bale fork on it so I could use the pickup or even tow it with the tractor, (have a three point fork for the tractors as well for the bales if there not stacked there good,
a lot is one need to figure out how one is going to use it, to carry a chain sow out to the back forty to cut a bucket of wood or to do real tractor with work,. tillage, mowing loader work, haying, snow removal,
and the cost of the tractor is only the beginning, as there are implements, one will want to make the tractor useful,
and how much time will one be using it,
and when it is said and done, there will be times one will wish he had smaller units and then lager units for different things,
I know that is not five things, to look for, but I think there things one needs to consider,