If a 291 fits into your life at all; a 261 CM will run circles around it while weighing considerably less. Catch one of the frequent dealer day sales and it won't cost much more. If you've a mind to, opening up the muffler will seriously wake it up as well. They are specced out with different chains in different countries, here the standard is a .325 23 RS. Mine cuts faster with a 63RS 3/8" Picco chain and bar in the spruce, pine, birch and poplar we cut.
For a bigger saw, consider the 441 CM.
I could be way off on this one; I'm still trying to wrap my brain around 24" trees that take 5 hours and 1 1/2 gallons of gas to cut up.
Not all 24" trees are the same size... Nor do they all come from the same kind of wood...
I do get that.
On the other hand, a perverse part of me remembers an old joke about a couple Texans.
A rancher was telling an old cowboy that he could jump into his truck at the house and drive half a day in any direction and still be on his own land.
The old puncher gave sad sigh; and said "Yep, I had a truck like that once too.........................."