I'm not a real fan of one brand over another. I do however, subscribe to the notion that Bush hogs (or anything else for that matter) that are "Heavy Duty" and use a clutch instead of sheer pins is a much better choice than "regular" duty or light duty ones with pins.
I really, really dislike sheer pins. Seems they usually break at the absolute worst part of a project. The only implement I currently have with pins, instead of a clutch, is a post hole digger (about 30-40 yrs old - brand escapes me.). It typically snaps a pin when the auger is about 35-40" down and full of clay.