I use a stihl MSA200 cordless saw with a 14" bar. One battery is sufficient for most days unless it is strictly saw work then I bring two. I haven't touched my gas saw (Stihl MS261) for trail work since I went electric. As long as your chain is sharp it works well for most saw work up to about 20" diameter. Benefits are the saw is lighter, you don't have to start it, it's quieter, and cleaner to throw in a decent pack. Downsides are cost of entry, the thin bar gets stuck a bit easier if the wood is under tension, and it doesn't compare to a gas saw with a proper chain for ripping.
I would go with a stihl or another electric saw that uses a similarly thin chain, the reduced volume of wood removed each cut compared to a thicker chain seems key to the efficiency of this one.
I also use some of the other cordless tools for building and the house to spread the cost of batteries and get more use from them. For building, the long reach hedgetrimmer is a game changer if you have thick salal or other undergrowth.