If you buy a battery operated mower, make it one from a place like Lowe's where many other yard things can use the same batteries. My yard is 80 X 287 and I use a 21" self-propelled for trimming/under bushes/uneven areas and a 42" Deere with a bagger for the majority. The bagger is great for leaves in the Fall, but stays on all year to collect clippings. In my case, it's a lifesaver and I kick myself for not getting one sooner. Yes, walking it off is good exercise, but when it's 90 Degrees and 90% humidity, it's hard to stay enthused! It also doesn't hurt to look at something used but in good shape from a dealer who will stand behind his equipment.