Oh hey now, the party has officially started!
We have an Aebi TT90 with a sick 6' Seppi hammer knife flail on the front for mowing high angle trails and taking out overgrowth. I don't know how many people here have operated a high angle tractor like that but holy shit- talk about a killer machine. 6psi in those huge tires, 4 wheel lockers on such a low & wide tractor with so much torque makes for some really cool crawling abilities. Also those hammer flails rock. Brush has no idea what hit it. Shame they're about $70k used! If you don't know what an Aebi is, look them up. Super fkn cool.
I want a Grillo Climber 10.27 so bad though for the regular shit. Much easier to use, and less expensive to fix.
For real though- people who need a competent, capable machine but don't want a full size tractor should look into BCS walk behinds. You can put a flail, sickle bar, brush or finish mower on them, rototiller, chipper, snowblower etc. and they're built like a real fucking tractor, not some Troy-Built dildo spinner. They aren't cheap but they can do a shitload of work with the right setup. Sulkie ready too. Check them out!