There is a size of lawn where cordless quietly stops being enough.
You notice it in the second half of the job. The battery light drops, the blade slows in the thick patch by the shed, and you find yourself mowing faster to beat the charge. A gas mower does not have that conversation with you. Fill it, start it, and it holds the same speed through the last strip as it did through the first.
Choose push if the yard is flat and choose self-propelled if it slopes — that is the decision that matters, far more than any number on the box. Two things to know before you order: a walk-behind stops making sense much past half an acre, and gas mowers are restricted in a growing number of US towns, so check your local ordinance first.
