Start with the battery platform, then decide the tool.
These hubs organize the core platform surfaces: who each system fits, what prices to watch, where the source boundaries are, and which reviewed deals or briefs should guide the next click.
DeWalt 20V MAX
Start or stay DeWalt when the next 3-5 tools are ordinary drill, driver, saw, oscillating tool, light or battery upgrades. Price the in-platform path before adding M12 or a high-voltage branch.
Milwaukee M18
Choose M18 when the next purchases are high-use drivers, saws, grinders, batteries or FUEL upgrades. Do not use one brushed starter-kit price as the whole platform verdict.
Milwaukee M12
Choose M12 when compact size, tight spaces, service work or specialty tools are the reason. If you only need a basic drill/impact path, compare total kit and battery cost first.
Ryobi ONE+
Choose ONE+ when the next several buys are household, repair, light remodel, nailer, inflator, light or occasional saw tasks. Recheck the plan before heavy saw work or 40V outdoor equipment pulls the budget into a second lane.
Makita LXT
Choose or stay Makita LXT when ordinary drills, drivers, saws, lights, oscillating tools and 18V X2 tools cover the next purchases. Treat XGT and mower-class outdoor work as separate branch decisions.
Bosch 18V
Do not open Bosch 18V as a casual third platform from DeWalt or Milwaukee. Price Bosch only when you already own Bosch batteries, need a Bosch-specific tool, or are evaluating a PROFACTOR/high-demand branch with exact SKU evidence.
DeWalt FLEXVOLT
Open FLEXVOLT when repeated saw, grinder or outdoor work names the need; retain ordinary expansion on 20V MAX.
Makita XGT
Keep LXT for ordinary expansion; open XGT only when repeated high-load work or OPE creates a named gap.
Ryobi 40V
Judge the 40V lane by mower route, yard jobs, included packs, recharge time and replacement cost.
EGO 56V
Shortlist EGO when mowing is the anchor job and the route, included battery, recharge margin and spare-pack cost fit.