A determined Man and any chainsaw (with a decent chain)
a tree don't stand a chance.
that's pretty much it. I just cut for myself now, not a production cutter. The amount of "time" I would save bucking up the trunk on a tree like that up above using a 1000 buck ported saw over that 250 dollar used built stock saw would be extremely neglibile compared to the next step, handling hauling home, splitting stacking, etc. We're talking a few minutes difference, as in big deal. It quite literally took me longer to sharpen that long chain then it did to buck the trunk up. I mean, it's perfectly fine as a cheap larger saw. I am in NO rush to get rid of mine anytime soon.
You can get into a used cs8000 and three sizes bar and loops, say a 20, 27 and 36, for less than a powerhead or one bar only classifieds or CL deal used and something in a similar size range from the "big two". Heck, right now my local CL, some dude is asking 800 clams for a used ms460. Well, that's nice, but for joe homeowner bucking some cords of wood, he could get a cs400 AND a cs 8000 and a lot of extras for the same money. Or a brand spanking new cs600p and another smaller saw used and some extras, etc.
It just depends on what you might could use, what sort of cash you got handy when deal x,y or z shows up, what would be a deal or bargain or not.
Mechanized full time professional production cutting (timber,firewood, arborist work), complete with the depreciation write off for your equipment, that's just a completely different discussion.