Let me vote here for simplicity, lower weight, and greater maneuverability. I mow in a lot of small spots around ornamental trees next to a fence, grass around A/C condensers, and generally a lot of spaces where the mower has to be moved fore and aft, tilted and turned, then fore and aft again. Light weight and a small footprint are what matters. Also, it's just not that hard to push a lawnmower on a level suburban lot (Houston, St. Augustine grass.) Hills would be another story, of course. OTOH, I'd also like the larger battery, as on cool days a single charge won't quite do the whole yard, especially if I use the battery first on the multi tool edger. So, how about a 7.5 AH battery option, or bare option like for some other tools?