Have Case, will travel. But like my Massey Fergusen best.
The Case is an older 420 Model. Probably 42 HP when it was a diesel. It was converted, befor I got it, to an in-line 6 cyl. gas motor so the diesel could power a water pump in a mosquito impoundment. That dude will make 75 MPH, but you'll never return from the trip. 4" of throw from right to left or left to right in the steering wheel before the tires respond; no shocks; balloon tires; PTO rotates at the speed of the engine and the bush hog will take out a forearm sized pine tree. The gas engine is NOT made for low speed high torque work.
The Massey 275 on the other hand is a 67 HP, circa '75, grove model, 4 cyl., diesel that'll outwork me every day and twice on Sunday - but I like it. The 20 blade disc and it are close friends. The newer bush hog likes it too. Certainly the box blade is a regular "pull". I get neck and back tired working it all day long when I sail a desk and work the keys on this PC all week, then try to be a "Farmer" on the weekends.
Complementing that equipment is a 100 gallon high pressure boom sprayer, 20-foot trailer, and Ford F250 4x4 for towing everything out of poacher reach. We don't need to cross the Ford, Chevy, Dodge, etc. bridge. I am good with what you've got.