When I moved to Indiana, I started over on lawn equipment. I decided to try out Ego, getting a trimmer and a blower. I am very happy with them, although the blower has an issue with the control that sometimes interrupts it working. I bought the larger backpack model which is plenty powerful but, of course, if you push it hard uses up its battery more quickly. The impressive thing to me has been that I still get decent use out of now 5-year old batteries.
I decided to buy a used Honda push mower when I got here. The one I got was a lemon. After I saw how well the other Ego stuff worked, I decided to take a chance on their self-propelled push mower. I am VERY happy with it. It easily has the power of a gas mower without the hassle and noise. When my son moved here and started renting a small house from us, I picked up a used Ego push mower for him. It just keeps on chugging. It is perfect for his very non-mechanical nature. My ego push mower also mulches leaves better than my John Deere riding mower.
Speaking of that, I am pretty much thinking that when my John Deere tractor mower fails me yet again, I may take the final Ego plunge and get their electric zero turn. I never thought I would consider that, but things have changed a lot. Not only have my batteries lasted longer than I expected, but they also recharge quicker than I would have thought. With all the batteries being interchangeable and now having 4 chargers, I have no problem finishing my lawn work even if I have to exchange some batteries.
Like Bruce, this is not really a "green" thing to me, but more about making things easier - as Larry has alluded to. However, I do like the "green" lower noise aspect for my neighbors and especially the Wedding Barn located across from my backyard fence.