A 290 or 391 either will EASILY fell any 15-20" hardwood trees that grow in north America. Either saw will EASILY fill the bed of your truck with firewood. My old man ran an 025 for 20yrs. cutting about 10-20 cords of firewood every fall. It had some minor issues this past fall (plugged oiler) so he wasn't able to cut. Not knowing how serious the issue was and worried about mom & dad staying warm this winter, I bought him a new 290 & he was happy as could be because it cut so much easier & faster than his 025. He fixed the 025 but doesn't use it. I figured if an 025 lasted that long & was still going strong, the 029 is the last saw he'll ever need. Since I bought it in September, he has cut his firewood and then cleared timber in a narrow ravine to make a pond. Most timber he cut in the ravine was red & white oak, with a mix of other hardwoods, all about 20" avg. That old man doesn't care about pro vs. homeowner. He only cares about the saw doing it's job. Either it cuts or it doesn't. "Keep sharp, well oiled chains, and fresh gas" is what he says is the key to a saw lasting a long time. He's in his mid sixties, has agent orange arthritic issues and gout, but still works hard. He enjoys it. What he loves about the 290 is the weight. He says compared to his 025, it's like a cadillac. The weight makes the cut so he doesn't have to push it.
Point being, he's not a pro. He's a homeowner that lives in a cabin deep in the Appalachian woods. His saws are homeowner saws, and do everything he needs, when he needs, without trouble. A 290 is overkill for him, so a pro 60+cc saw would be ridiculous overkill. The old man built the cabin he lives in with that old 025, plus all the wood that heats it up until this past fall. He isn't racing his saws or seeing how fast they are, not porting them or modding, not making youtube videos of how awesome his tinkering skills are. He cuts firewood & other misc. property management things. A faster saw for him only means his chores are done quicker, which means more time with his beagles chasing bunnies. For a non-pro, non-tinkerer, a homeowner saw is perfect. Any idiot will kill a saw regardless of it's class.