I'm a little late here, but I'll throw in my 2 cents. I bought my first (and probably only) tractor last year. A 3520 cab with 300CX, heavy duty bucket with replacable edges. I've also bought an ANBO GR-M grapple and a Titan fork set. I have 4 acres in a residential area of Interior Alaska. I want move snow (seem like I do that EVERY year) and would like to clear some of the land to plant a garden. So, you know I'm not the most experienced advice you'll get. I think tractors are like boats; as soon as you get one, you wish you had a bigger one. My 3520 will do what I want it to. It will take more time than if I had a 4520, which I considered, but the price differnce was too much. So, the old trade off: time or money. When I get the areas I want cleared done, the 3520 will be plenty big enough to move the snow and till the garden, and move water containers. Would it be easier and could I do more with a 4520. Yup. Would I like a 4520? Sure. Do I think the price difference is justified for what I'm doing? No.
Think about what you'll be doing most with your grapple as they can be rather specialized as pointed out above. I got mine (a root type) to, well dig up roots of those pesky birch trees that try to get to my house foundation, and to remove standing trees. It is a bit difficult to pick up piles of brush / logs because the bottom tines don't project very far forward. But, it does dig really well.
