A little more drivel.
I forget a lot in here are not feeding a boiler.
SO, a big saw might be a touch overkill if you are feeding a firebox that handles 18" wood.
BUT you can buck smaller sections of a large tree to suit your needs.
I had a few sections of BIG pine that would not budge to the Fiskars so I noodled them today. I got 20 quarters out of those sections and this is an average of the quarters.
For someone with an in house stove, this is a lot of wood.
As Mainewoods mentioned, a big saw can get one a lot of primo wood that the "average" scrounger would pass up because of size.
Again, my .02