Closing Recommendation
These two graders are built for very different site sizes, so pick by how wide and how heavy your work is. Choose the Cat 24M when you maintain mine haul roads or very large earthworks, when a long blade and heavy blade pressure let you cover more width in one pass, and when standard GPS helps hold exact levels over long stretches. Choose the Komatsu GD755-5R when you build or repair normal roads, when a tighter turning circle helps inside a road width, when easy transport on a standard trailer keeps your shifting cost low, and when a smaller engine keeps daily fuel down. So match the machine to your work: Cat 24M for mine haul roads and very large sites, Komatsu GD755-5R for normal road work and easy moving.