A large part of answering a question, is interpreting it, and answering what you think is being asked. After 16 pages of answers, well, I've got a different take on "all time best saw"..
Arguably, I doubt if there's many members on this site who own less than six saws. Yeah.. It's an addiction, and this is the support group.. This and Jack Daniel's..
My all time favourite saw? For me, it's the one that got this addiction started.
An Echo 400"F".. and .. oh yes.. I shelled out the extra $20 bucks for the "F" model.. Tool less adjustment of bar tension?? Oh Heck yeah!! Mine !! .. MIne .. Mine!!..
Boss was whining about not being able to find anyone to deal with some trees that he wanted down on a few properties he owned.. The words that have rumbled through what I call a brain for a few decades, that have defined my life, reared their ugly heads..
" How much could that possibly cost"...
" What could possibly go wrong?"
"What's the worst that could happen?".
So, down to Home Depot, and a brand new Echo 400 F it was.. I figured that I could drop the trees, make a couple of bucks, and walk away with a free chain saw.
So it was that one saw that started the addiction.. A lowly Echo 400 F, a "meh", all around saw, on the best of days.. It could have been any saw.. Stihl, Husky, Echo.. it wouldn't have mattered. It was the first saw that was the best all time chain saw that I've ever had.. It was the one that got me started.
Best saw ever? The one that got me started down this road.