It's not the size of your saw, it's how you use it. I've been building with a 14" poulan for years. It's a good trail saw cause it's light, quiet and you don't really care when you inevitably dull the teeth on rocks and dirt. Plus it's quick to sharpen cause its so small.
my dad and I used one for years. It even spent a winter on Burke in a plastic bag and started fine the next year with some new gas.