Heres the deal, I own a 048av, my 1st saw, I have had it all tuned up. It seems to cut fairly well, but when I am cutting a green frozen tree it seems to be all it can handle. Does any one know how much horsepower my 048 has? How about cubic centimeters? I would like to know because if I buy a new one I would like to be able to compare it to my old one. I've seen a few 066 magnums around, I am curious to know the differences between the two saws. I am thinking that I want a saw that scares me, one that rips and tears and leaves nothing left. One that will make you nervous when you start it. I would prefer a second hand saw so any suggested older models would be appreciated.