Sid... you mentioned that your use would be on your farm, so I'm guessing your viewing distances may be fairly long. I can see how you would appreciate a pair of tens.
Having just received a pair of Leica UVHD+ in 10x42, I'm totally sold. Awesome ergonomics, superb detailed clarity and razor sharpness, and wonderfully pleasing color quality and contrast. And, the price at $2300, while not inexpensive, is not stratospheric as some other models are priced at today. Most definitely, UVHD+ 10x42 is a model you should give some consideration to!
Also, consider Victory SF 10x42 - if a flat field and more edge sharpness is important to you. Color quality isn't Leica, but each brand offers something different.
Right now, my Steiner 8x56 bins get picked up the most but, I have some 8x30's that are really good too.
Some 10x or 12x would be better for daytime use. Whether I benefit from the pupil dilation benefits of an 8x56 is debatable but, the image I get is really nice at night. That is offset by the weight and bulk which in some regards is nice and others not so much.
On a random note, I did use the Steiner 8x56's to view a "Strawberry Moon" and they worked exceptionally well given the limits of the binoculars.
Some of my viewing is at 200 yards in trees or under shade so, higher magnification would be really helpful when looking at the cows at that distance since they are all mostly black and often blend together when they are standing close to each other.