Quick verdict

I would pick Milwaukee for an existing M18 user who wants more cordless muscle. I would pick the EGO for a homeowner or light commercial buyer who wants the easiest battery trimmer to live with.

Best Battery Pick for Milwaukee Owners

Milwaukee M18 FUEL 3006-22

A dual-battery M18 trimmer with a 15- to 17-inch swath, heavy-line support, and serious torque for buyers already deep in Milwaukee batteries.

Power
Dual M18 brushless
Cut
15-17 in. swath
Weight
Kit weight varies
Score
9.3

Best EGO Battery Pick on Amazon

EGO Power+ ST1623T

A 56V EGO trimmer kit with a 16-inch swath, carbon-fiber shaft, POWERLOAD, and LINE IQ for buyers who want easy battery trimming.

Power
56V brushless
Cut
16 in. swath
Weight
Kit weight varies
Score
9.0

Power and line support

The Milwaukee has the stronger heavy-duty argument because the dual-battery setup and heavier line support make it feel closer to a pro cordless tool.

Ease of ownership

The EGO wins the convenience argument. POWERLOAD and LINE IQ are genuinely useful if line handling is the chore you hate most.

Battery platform

Buy the platform you will actually keep using. Milwaukee is logical for contractors and tool-heavy garages. EGO is logical when outdoor power equipment is the main battery category.

Which one should you buy?

Buy Milwaukee M18 FUEL 3006-22 if

  • Existing M18 battery owners
  • Heavier cordless trimming
  • Commercial buyers with a charging plan

Buy EGO Power+ ST1623T if

  • Easy line loading
  • Serious homeowners and light commercial work
  • Buyers building an EGO outdoor-power setup

My pick

My pick here is Milwaukee M18 FUEL 3006-22. That does not mean the other trimmer is bad. It means Milwaukee M18 FUEL 3006-22 is the cleaner recommendation for the buyer this comparison is aimed at.