Agree on the premium no ethanol for any small engines. Switched years ago and made life much easier. Just bought a new Stihl MS-170 to bring the total to 3. Partly bought it because I was in too much of a hurry to sharpen the chain on the other saw at the house. Third is at cottage. I took me a moment or two to appreciate that there was no nose/tip guard on the new saw. I guess everyone has been taking them off so they said no point and we can save a buck in manufacturing. Much better for ice sculpturing - a bit more dangerous for the uninitiated. All chain saws can be dangerous obviously. The old-timer that taught me when I was a teenager made a point of repeatedly showing me the scar on his thumb. Must admit that I once fell out of tree with a saw in my hand. Fortunately, not running and gave it a toss so as to not land on it or vice versa. A nice damp creek bank cushioned my landing.