Yes - now I want one of those Divertos. Great looking machine!
As to the perfect grapple tractor question from OP, or rather perfect grapple/tractor combo, I think it really is the one you have or can get your hands on within your budget. (They're all perfect in their own way assuming you find a respectable loader and a machine with enough ballast.) I just picked up 17 acres that sound similar to yours. My plan involved bringing in a team with Forestry Mulcher and Skid Steer with grapple to mulch up stumps and also pile/burn tops and debris from recent pine logging. It was a war-zone and would have taken me years to clear up on my own during weekends. Mother nature may have beat me to it by that time. Having let professionals do some of the heavy lifting, I was able to keep my tractor budget lower and ended up with a machine that might not work on 50-100+ acres, but it should be great for my smaller tract, and maybe yours.
Once the first pass clean up was complete, I decided to get a smaller mid size CUT to replace my nimble Max 25 which might have done fine, but I had an excuse and thus ended up picking up a Mahindra 2538
http://mahindrausa.com/sites/default/files/tractor/pdf/22749 MAH542538 071015.pdf, and a 60" EA Single Lid Wicked Grapple
Single Lid Root Grapple This setup nets out a little more than 3/4 of a ton of lifting capacity and I probably won't have too many loads that big to haul. You can go much bigger on machine weight and loader capacity, but this is just one viewpoint for you.
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The picture above is in town, but what I have left at the micro Ranch is lots of brush, lots of remaining logs and dead fall that to need to be shuttled around, and a good amount of remaining yaupon to grub out. I have not yet been out to property to get crazy with it, but after picking up the unit today I spent a couple hours on my two suburban acres just playing around. I could not stop the machine or grapple, and was able to haul around some heavy and odd shaped stuff.
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The grapple only weighs 380 pounds, but that box blade is +/- 700 pounds and I had it out as far on the grapple as I could to see if it would strain it. The thing didn't even groan. Nothing major, but that was indeed a good leverage test for not a huge machine without loaded tires, and no implements on the rear.
For the many trees and trails I have up north I desired the narrowest and lightest grapple possible that would still serve as a gauge for squeezing the whole tractor through openings. The 60" model fits the bill perfectly on many fronts for this particular tractor. (There are merits to both narrow and wide grapples, and you can find great discussions elsewhere in the forums. Also discussions on single vs dual lids which also each have their merits as well.) Again on the lid, single was perfectly fine for me and you can see it grasped the box blade firmly even when hanging out there.
Biggest consideration here in my opinion is having access to a great dealer who can service your tractor if needed, and get you parts when you break something that is not warrantied. The pics above could be of blue, white, red, green, or orange tractors and I bet all of the owners would be grinning as big as I am with my setup. I certainly don't have the biggest, baddest tractor/grapple combination, but for a very reasonable budget you can have something similar to that pictured and be able to move a lot of wood, brush, roots or whatever else you unearth. A plus with this setup is that it is still pretty agile at 60" max width front and rear. (Regular loader bucket is 66" for when you'd be moving dirt). It also handles a 6' Med Duty rough cutter nicely.
Good luck with your decision and stay safe working out there. It would be hard to make a bad decision on this one if you consider and incorporate the many helpful posts above. Let us know what you end up with!