We also have had two king kutter brush hogs that were and are good machines. We got the first one new used probably 15 years. It did well for us, husband fixed it as I learned to use it, improved the fields. We bought a Kubota tractor that came with almost new implements, another king kutter brush hog and a finish mower. We sold the old brush hog and got good money for it. They are a bright blue color, stays blue even stored outside in the sun.
Pastures here are in very good shape, no stumps or rough brush now, so I cut with the finish mower these days. I can set the height, it cuts all the grass the same, leaves no windows with the side chute for cut grass. I really like the job it does, never scalps because of the 4 wheels carrying it. Not made for rough cutting, pastures even cut at 5 inches high, look like a golf course.
I do use the newer brush hog outside the fences, sprouting brush and weeds on neighbors ground don’t bother it. Mowing keeps their woods and fields back away from the fences. They are happy to let me do the work!! The king kutter brand brush hog have both been good machines for use with Ford 8N tractors and the smaller Kubota. I use 5ft wide mowers. The finish mower is a Ford, 930B , and a very nice machine. I like the 4 independent wheels that adjust with only a locking pin to change them, as its best feature. Though the floating arms and floating part for the adjustment piece from seat to 3pt, are great features too, letting mower move to cut independently of tractor rise or fall on small hills.
You might consider a finish mower instead of a brush hog if your pastures are not rough. I have picked up and moved a lot of rocks to get them out of the fields. Love the FEL on Kubota for that! But you always find some new rocks come spring, have to “harvest them” to keep things smooth for mowing.