I'm a landscaper by trade so like to think I could make use of one. I do some tree work, run my own towable wood chipper and heat my house with wood so it would certainly be helpful even if a lot of it's use would be for personal benefit. It would have to be able to run a 6" chipper at the very least for it to be worth having though - if I'm going to spend the money I would like it to earn some in return.
I like the little 411 because it's cheap, but I've always had my heart set on an ag spec 406. By todays standards even they are low on power but it's good enough to get by doing what I'd like to. The square cabs are just too big - I wouldn't have anywhere to park it for a start!