DeWalt 20V vs Milwaukee M18 vs Bosch 18V — which platform should I buy into?

Across the reviewers we read, all three are considered professional-grade. Community discussion on r/Tools tends to favor DeWalt and Milwaukee for sheer ecosystem breadth, while Bosch is praised for build quality and ergonomics with a smaller (but growing) tool selection. The 'best' platform is usually the one a buyer's friends or coworkers already use, since batteries are not cross-compatible.