Dale isn't here anymore but I'll
answer for me.
My primary saw is a battery Stihl. I love it. It's nice to just worry about the chain, battery and lubrication. It's quieter, lighter and smells better. No crank pull to start.
For the larger, harder pieces of
wood, it goes go through the battery quick. You'll definitely want a couple. Nice thing about Stihl is you can use the same batteries in all their equipment.
I do have a couple friends that handle the big trees for me though. Partly because it takes a lot longer with mine and partly because I'm new to felling. It's been a learning process. I might get a bit bigger saw someday but still plan to stick with cordless Stihl.
Anyway, good luck with deciding!