The other day a neighbor called me and asked me if can knock some trees down which there around four trees 4 meters height, never have done this before so I told him I will do that. I took my MS 660 chain then went to cut the trees down, I cannot believe how heavy the MS 660 when it hold horizontal man it is heavy even I have used 25 inch bar. I was thinking what type of chain saw you use when you want to bring a tree down say like 12- 16 inch in diameter. I am very sure there are some Stihl made chain saw for that purpose light in weight. I know the MS 660 is good for milling is perfect, but I like the MS 650 much better and it is powerful when it comes for milling.