Closing Recommendation
Pick the machine that fits the work you do most. The Case 865B has more engine power and a big fuel tank, and it turns in a tight space, so it suits long roads, quarry floors, and big sites where you grade for many hours. The Cat 140 GC comes with an AC cabin and GPS and uses less fuel, and Cat has strong dealer service, easy parts, and good resale, so it suits jobs where the grader must run every day for years. Before you buy, check that a service centre and spare parts are near your sites, and that your drivers are happy in the cabin. So match the machine to your work: Case 865B for heavy, long-hour grading on big sites, Cat 140 GC for steady daily work that must stay running for years.