biggest question is, what kind of wood and how big is it? the guys in the chainsaw section will give you tons of grief and try to pressure you into a 661 but if you dont cut over 28-32 inch wood its not necessary. bigger isnt always better. the 362 will give you the same power or maybe a tish more than the 311 but will have an auto-tune carb (m-tronic is stihl's name for it). i have a 362 and i love it. the rpms are insane. pulles a 20" bar very well in hard oak or dry ash. i also have a 461 i just picked up this year. its heavier and certainly has more power but my favorite saw for 75% of cutting is my 261. its light and easy to carry all day. if you are cutting an average size of firewood around 18-22" id say the 362. if you are getting mostly 28" wood then the 461 is a better option