I've actually given up on box blades. I now use a Reveal 4-n-1 for all my grading, leveling, etc. I also use it for the dressage arena, so it gets some pretty heavy usage several times a week. If you don't use it often or hard, then a lighter one might work. Check out some other brands of box blades too... like the bush hog, etc.
Or maybe just keep using the smaller boxblade on your smaller tractor.![]()
I use my FEL also for the rough stuff.
Need 2 box blades - I use them as ballast boxes, etc.
D.