First: Buy bar oil. This didn't come with any.
Anyway, we're building a house in the forest and saved ourselves a pretty penny, having the knocked down trees left behind. We plan to use some for firewood and others for nurse logs. Using the fastest speed and cutting through the thickest trees this thing will get very warm, haven't had it overheat on me yet. I'm not in a rush, so I knocked it down to the middle speed and it goes much further before getting hot. I suspect sending it down to eco will allow it to run for as long as my 7.5 amp hour battery will last.
I suspect my work will be using the fastest speed to make quick work of the tree limbs. I can readily work through dozens of those and it barely breaks a sweat, probably even cutting the trunk away from the exposed roots. Then for the majority of the cuts, I'll just use the medium speed or eco speed.
The time penalty doesn't seem that bad, especially since it saves me from having to buy larger batteries or recharging them as fast.
For my application this chainsaw works very well. If you're looking for something that will help you thin a forest in record time, stick with gas, if nothing else refilling a tank in the middle of nowhere will be far easier and cheaper than hauling a bunch of batteries.
But if you're living on several acres with more tree than you have ideas, and you have a little bit of patience to work within the limitations of this tool, then I recommend it.
Yes, you can get a better gas chainsaw for the price. But recall the other benefits, the avoidance of having to visit a gas station for fuel and ridiculously simplified maintenance. If you're already bought into the EGO ecosystem, then it makes use of the chargers and batteries, you already own.