I’ve used them extensively when I’ve contracted with tree crews. I have 0 complaints they are amazing saws. The only reason I don’t own any of them is the cost to get into them is so high. Sure they’re $450-850, but you need around $1000+ of batteries and chargers to be able to use them all day on big jobs. Since the tree crew I work for occasionally owns them and I didn’t have to pay for them, I loved them. Super light, really powerful, never have to worry about them not turning on from overheating on a hot day like you do a gas saw. But for the average guy on a budget who wants to use the saw a lot, you’d be better off with an Echo 2511. If you have the money for a top end saw, but don’t use a saw often at all, a stihl battery saw is the way to go since you don’t have to worry about maintaining them and changing gas all the time and starting them once in a while to prevent them from going bad from old gas, or cleaning carbs/fuel injectors, etc. For the guy who’s on a budget AND doesn’t use a saw often, a dewalt or whatever battery ecosystem you have chainsaw is probably the way to go. For an even lower budget, a corded electric saw and an extension cord is also an option, but your range from the nearest outlet is quite limiting
. Frame house. Add corrugated metal roof. Pic below shows framed house ready for bamboo panels and floor. Total time from felling trees to livable house, about a week. Good ventilation, rain proof and earthquake proof. Total cost- skill gained by experience, metal roofing, odds and ends connecting hardware, sweat equity and saw fuel and maintenance. 
