Stihl MS390 is THE SAW! ( unless you are a professional lumberjack) I cut my own firewood every winter and finally wore out my first-ever Sears/Poulan 3800 after almost 20 years. The Stihl 390 is about 2/3 the weight, and has done everything I have asked of it for the past six years. 20" bar is plenty! I have bucked 36" trunks with it. Buy the Stihl and it will be the last saw you will have to purchase!!