I picked up a Stihl MS261C last year. It's been an awesome little saw. I have 4.5 acres of hardwood, have cut up around a dozen read oaks in the past year, have 6+ more dead ones still standing, and another 5-6 that were knocked over by ice and wind storms. So for my purposes, gas is the way to go. If I still lived in town, I'd probably get a M18 saw.
My Farm Boss was only ~30 when she died LOL. That is when I looked at electric starting with Stihl. They were just coming out then and almost had a heart attack when I seen the price and the price of batteries. Hard to kill a Stihl.