I've read so much about saws, that I've come to one conclusion.. The saw chain needs to be absolutely razor sharp. Not sharp (ish), not even "it's a new chain" sharp, but cat's claw sharp. .. It also needs to have the rakers set to the type of wood that's being cut. Huge difference between 20 thou.. 25 thou..
I had my "destruction dude", tearing out some trees with an excavator with a thumb, and tossing them into the bush. I was sitting in the garage, and it was all good, until the lights blinked three times, and the world went dark. Sure enough, a minute later, "Reg", was at the door, wanting to know if I had a saw, as he'd tossed one on the hydro wires. "Sure".. "Whattta ya want, small, medium, or large?" He picked "medium".. I gave him my Echo 590 Farm boss. Greatest saw in the collection? Ahh no, but I'd just got done putting a ( for me) world class sharpening on it. I sparked it up, and then shut it down and gave it to him. I could hear him having at it about a minute later. He came back and handed me the saw.. " Darn, that really cuts!!".. Well .. no actually it doesn't.. it's just a common Echo product, it's decent, but it was the sharpening that makes the difference. He wasn't impressed by the saw, he was impressed by the sharpness.
I'm not bragging about my skills,, no, far from it. I'm pretty sure that most of you could do as well as I can, and way, way better.. But, when it comes to worrying about what saw to use to cut whatever.. Start with sharpening skills .. Test a saw with a fresh chain, and then with one that you've sharpened, and then with one that someone else has sharpened.. Maybe, the saw isn't the issue..