Looking at expanding my echo collection and debating on the 620 or 7310. I see that the 620 is a few hundred bucks cheaper which would allow me to buy an extra bar and alot of chain. Would like to be able to run a 28-36" bar occasionally. Fwiw just a saw aficionado that enjoys felling and cutting firewood and clear cutting for food plots. I was reading that the 620pw is a real nice saw for its size. Max tree size is probly 36"ish. Any bigger than its a pain to move ans split. Mostly oak popple maple is what I cut and dead ash. Thanks fellas!