25002500, I too have seen blades thrown from a tree cutter before. However, I've also seen tooth holders thrown from mulchers before. I have lost a blade myself on a rotary cutter before, it wasn't a Brown though.
Don't let that kind of thing influence your decision. The ones that give the most trouble and tear up the most and loose the most components are the ones that are being used 10-12 hours a day in the roughest environment possible with the least amount of maintenace possible.
A single brown tree cutter might cut several thousand miles of right-of-way in a years time. I doubt seriously that you would do that much in a lifetime just using it on the farm.
In addition to the Skid-Steer/Mulcher and Tractor/Tree-Cutter options, you could also go with a Skid-Steer/Davco package. Then you would have all the benefits of a skid-steer with the Davco which is more cost efficient to operate than a mulcher. A Davco is probably the closest thing that you could find to a Brown, but specifically built for the skid-steer platforms. They are also comparable in price at around $10k +/-.
If you have the money to spend, then the sky is the limit. A big factor in your decision would have to do with the terrain on your farm. A tracked skid-steer will go a few more places than a tractor, but they are more expensive to purchase and to operate.
My personal opinion would be to go with a Woods Boss tractor and a Brown Tree Cutter. You could purchase this package brand new in the neighborhood of $70k +/-. Not only would it be cheaper to purchase than a skid-steer with a mulcher, it would be cheaper to operate over the long term. The Woods Boss will also go 95% of the places that a tracked skid-steer will go.
Those are my thoughts. Hope it helps.