I have a decent frame saw i picked up years ago for cutting deadfall into firewood. It's always worked fine, but it's pretty dinged up and i'm considering buying a new saw. I've looked at some of the 'folders' and other saws, and i've seen a few things about these new 'pocket chain saws'. Has anyone used one of these? I'm wondering about how they compare to other saws, and peoples's saw experience in general. I'm mostly just hacking up 3 inch to 6 inch deadfall logs. Any recommendations?