I'm just going to pile on here.
I have gas stihl and electric worx, not battery, chainsaw. I last used the stihl, 3 years ago, i'll have to use it this year or next to cut up a large tree that's sitting on a fence. I looked at the gas mix i had for the stih and it smelled like varnish. I'm not advocating buy an electric worx chainsaw, but it was only $80 16" bar, 14 usable, but it cuts surprisingly fast. There's a bunch of things i don't like about it, one being tied to a cord, but for cutting up 12" or less stuff, it buzzes right thru it. If i were more wealthy, i'd for sure look at that makita, especially since you have batteries already, and it's pretty nice not to have to mix up a bit of gas and oil, just to cut a few things and less smelly and loud.
Now the stihl is from 85 so kinda old, and it's been using corn gas it's whole life and i've never had a problem with it, though now that i've put that in this post, i may have jinxed myself. It came with a 14" bar and when it got a little worn, put 16" and a second one, numerous chains, couple sprockets and clutch or two. At one time i had a lot of use for it, but not so much now.