I have a Landpride GS2584 with scarifiers and adjustable blades. I have never once adjusted it and I have never once found the need for scarifiers.
I ended up buying a heavier duty grader made by Road Boss because I managed to bend my Landpride.
The Road Boss doesn’t have scarifiers, and has never needed them. It also has adjustable blades and although I haven’t adjusted them, I like having the option, because it is set rather aggressive from the factory considering my small tractor and HD land plane.
I do believe I will use the adjustability of the blades at some point, and I would recommend getting something adjustable. However, if you find a good deal on a used one that isn’t adjustable, don’t pass it up just for that reason, it’s obviously not a critical feature.
The difference between the Road Boss and Landpride is VERY noticeable! The Road Boss works considerably better in hard pack and I like the longer sides. It also has a lifetime warranty, and is built much better.
Landpride 846lbs vs Road Boss 1,100lbs
The Landpride is no slouch, but I was disappointed in how easily it was damaged. I know that a lighter duty 1584 would be very disappointing for my uses.