You've gotten some really good advice and have begun seeing some of the opposing camps. On the right there is the "bigger is always better" crowd. On the left is the "don't spend a fortune for a tractor capable of doing a big job that only has to be done once" crowd. I'm a centrist, leaning slightly to the right...but then I have 155 acres to care for.
Back in the days when all I worried about was the 7 acres of meadow surrounding my house, plus a couple of trails in the woods, I was perfectly happy with my little
B1750. Not much lifting capacity on the loader, but it was light and nimble, mowed like a son of a gun, and did a decent job moving snow which we get a lot of here in northern VT. I had a lot steeper slopes though, at 22%, which was one reason I traded up. I'm also a fan of R1 aggies, but in your case it sounds like R4s would do just fine.
Orange, green, blue, red. Take your pick and try them all out on the dealers' lots. Some dealers will even let you try one at home if they feel you're definitely going to buy something from them. Or they'll rent you a tractor with the rental fees going toward the purchase price.
And that's a nice segway into my last point. Don't just shop for a tractor, shop for a dealer. You're going to be spending a lot with the dealer, and probably have a few service calls in the course of your ownership, so choose one you feel good about. If I liked a Deere and a Kubota equally, the deciding factor would be the dealer.
Happy hunting! Pete