I have a .25 acre lot. I am on my second cordless electric. My first I bought eight (?) years ago. It was a Kobalt 40 volt. At the time I needed a new mower as my old Craftsman was dying. It was an ok mower. Not great. Two years ago as those batteries were dying I bought a 60v Craftsman instead of investing in new batteries. I found it on clearance at Menards. I saved a couple hundred over the Ego, but if I would do it again I would go Ego (for one reason so I can sell my ice snow blower and get electric. Craftsman doesn't make an electric snow blower).
The cordless Craftsman cuts way better than the Kobalt but not as great as the old gas Craftsman. A neighbor has an Ego and his cuts so much better. At this point I really don't care though as I am not that picky about my lawn. If you are I suggest testing a few electrics first. The 60V Craftsman is the same mower as the new ice Craftsman mowers but with an electric motor, so the body and handles are sturdy steel and my old Kobalt was all plastic. My Craftsman is louder than my neighbor's Ego. All in all I am not completely unhappy with the Craftsman.
Spring is a difficult time for a cordless. The grass is so thick and grows fast that it just kills batteries but I get through the entire yard with a single battery. I bought another battery anyway and just mow twice a week (I walk a lot every day anyway so not a big deal. Truthfully, I though long and hard about buying a robot mower. I thought that would save me a lot of time and hassle but I didn't have $2500 to drop, and, again, I had walking to do anyway.). Once the heat of the summer settles in and the grass isn't as thick I can mow once a week and use little batteries. I also have an old Worx 18v cordless trimmer that's on my second battery. It would be nice to have products from a single company. Maybe Craftsman will step up.
In summary, if you go electric spend the money and get something good. Don't go cheap. Also, if you have an opportunity the more power the better. I see Kobalt now sells an 80v mower and that may help with some cutting issues I've experience. Also, I mow at the highest setting so that may be a reason too.