Is this worth it over a cheaper brushed impact driver?

For regular or heavy use, yes. The brushless motor runs cooler, lasts longer and delivers more consistent power than brushed drivers. For occasional light tasks, a brushed model can be enough.

How does it compare with Milwaukee's M12 impact driver?

The M18 is stronger and better for long screws and lag bolts. The M12 is smaller and lighter, which many prefer for overhead work and tight cabinets.

What comes in the kit?

The kit includes the impact driver, an 18V M18 battery and a charger. Confirm the exact battery capacity and case contents for the specific kit, since bundles vary.

Does it take standard hex bits?

Yes. The 1/4-inch hex chuck takes standard impact-rated hex bits, and quick bit changes need no key.

Can I use my other M18 batteries with it?

Yes. It runs on any Milwaukee M18 battery, so it shares packs with other M18 tools. Larger packs add runtime but also weight.

Is it too heavy for overhead work?

It is heavier than 12V compact drivers, and some owners find long overhead sessions tiring. If most of your work is overhead, a lighter M12 model may suit you better.