I'm a little nervous chiming in here, so take this all with a grain of salt, and remember what you paid for it.
the others have given excellent advice, and I do not disagree with them.
You need to define your tasks better. Go "must have," "regularly useful to have," and "would like to have." part of my concern is you say that you are new to tractors. There is nothing wrong with that, but it can make things difficult when determining your job list and anticipating capabilities.
For instance, putting in a garden has vastly different meanings to people. If you plan to use the machine to only break open the ground and keep
everything by hand, anything will work. If your food plots are 50x50 feet, a smaller machine than the 2310 will be in order. If landscaping to you means moving several hundred cubic yards of earth to fix the contour of the yard and driveway, you need something much larger. For moving and cutting into the dirt, heavier is better.
Bigger machines get heavier more quickly than their footprint increases in size. As was said, if you mainly plan to disc and move dirt with a box blade, buy the Mahindra, of those listed options. The weight will make perform better. If all you really want to do is mow lawns and then, sometimes, maybe do some odd grading of driveways, disking for food plots and dragging a few trees a year out for firewood, go buy a nice commercial lawn mower and any major brand two wheel drive tractor for 3-4 thousand dollars.
I grew up on an orchard, and my grandparents farmed; I don't remember NOT operating a tractor from the time I was 7 or so years old. We never had anything with a loader on it, and I didn't know useful it would be until I bought a little Yanmar 1401D. That is not to say we didn't move dirt: I moved vast amounts of dirt with a box blade. It is still a better and faster tool for many dirt jobs than a loader.
Picking your tools will be tough, too. I have a post hole digger. I use it every year. But I hate it. No other implement I have puts me in more danger, causes more aggravation, or is a larger nuisance. If you plan to use one often, I wish you well. What IS useful is the boom pole the auger head mounts onto. I have pulled engines, lifted animal carcasses and boat hulls, hoisted terribly heavy axles, implements, and all manner of things with it. That may not be of use to you. A loader may not be, either.
Loaders aren't meant to dig holes. Naturally, I do that regularly. 4 wheel
drive really helps backing out of a hole. Otherwise, for loader work, I don't find there to be much difference. If I operated on very hilly terrain I would say the reverse, I think. Loaders make a tractor bulky, cumbersome, and difficult to maneuver when operating in dense environments or in smaller areas. California and I each have small, heavy YM186Ds without a loader for exactly the same reasons: they will pull small, heavily ballasted disks under or near our fruit trees. Our loader equipped YM240s are too tall to work in the close quarters of an orchard as easily or well. So, do you need the loader for placing mulch or precise loads of gravel?
Where will your food plots be, and, if off-site, what do you have to transport your equipment? It takes a REALLY long trailer to transport a brush mower, disc, and tractor in one trip. You won't be able to do it with a normal equipment trailer. How big is your tow vehicle? If you are going to be towing any of those machines with implements, anything under a 1/2 ton pickup isn't really safe or responsible in my book. California has weighed his bare YM240 at something like 3000 lbs with a loader and larger tires. All of the machines you mention are heavier than that.
I would suggest renting an equivalent machine to the Yanmar or Deere, and to the Mahindra, if you can find one. If not, find a comparable size 4wd and operate it in 2wd only. (Brand doesn't matter) Try out
the tools you think you will need. Sometimes renting a big skid steer, or excavator, or loader/backhoe, or what have you means the job is done in a day or so with no undue strain on equipment. You can be money ahead and not have useless equipment once complete.
Do you have neighbors or friends with equipment? If so, how do they use it, and what would they do differently?
The Powershift in the 2310 is superior in usability to the straight gear tractors. The Mahindra will outplow or disk the others.
All should be easy to work on. The Yanmar has added complexity in the transmission. They are virtually trouble-free, though. It seems like you will end up with an Internet-based support system. (ie, no dealer) I think all three are about equal there. Are there any other options on craigslist or local classified service?
I don't think I told you much that is useful, but let us know what you decide, and take pictures!
