Dad’s short answer: On hard floors and low-pile carpet, yes — modern cordless machines genuinely clean well. On deep pile, or for a whole house in one session, a corded vacuum still wins because it never rations power and never fades.

Where cordless has actually caught up

On hard floors it isn't close anymore. A good cordless stick with a soft roller cleans hard floors as well as anything corded, and it's far more pleasant to use. Same on low-pile carpet and area rugs for routine cleaning.

The brush roll is doing more of that work than the suction spec. A well-designed powered head agitating the surface matters more than the number on the box, which is the same story in every vacuum category I test.

Where the gap is still real

Deep or plush pile. Pulling embedded grit out of thick carpet takes sustained airflow and a motor that isn't managing its battery, and battery machines throttle. You'll feel it.

Whole-house cleaning in one go. Most cordless sticks give you somewhere around ten to twenty minutes on a boosted setting, and boost is what you need on carpet. If your house takes forty minutes, you're swapping batteries or stopping to charge.

Bin size. A cordless bin is small, and with pets you'll empty it mid-run. That's the part nobody mentions.

The honest summary: mostly hard floor, cordless can be your only vacuum. Mostly carpet, cordless is your everyday machine and you still want something corded for the real clean.

Dad’s Take: Cordless has won the daily-use argument. Corded still wins the deep-clean argument. Both are true at once.