Interesting read, and IF 30" trees are in the OP's plan here he needs more saw.....IMHO I'd also add that there is no such thing as a one saw plan. The OP should get two saws, even for "casual" cutting. He needs a pretty decent size saw IF there are really 30" hardwoods in his future, at least 60cc and no less than a 20" bar.
Pissing around with little saws and too much bar on them can be a lesson in humility, unless your time just isn't worth anything. Sooner or later you will pinch the saw in your one saw plan hard enough you'll need another saw and maybe even a log roller to get it out. Probably sooner than later you'll stick the darned thing in the dirt or hit a rock and it will quit cutting, so it's nice to have another saw ready to go so at least you can get some wood cut vs spending most of the afternoon on the tailgate of your truck trying to get the dull chain sharp enough to start cutting wood again.
I take no less than 3 saws to any outing, usually 5-6, cleaned, maintenance done, razor sharp, fueled and ready to go. Even then I've had outings where I went thru all of them till empty or dull and wished I'd taken a few more. Maybe I'm a little more outside-the-box with this stuff than most, but we cut at least 100 cords a year as we have 3 boilers to feed and sell a little extra wood on occasion. I still absolutely LOVE running the saws, and split a good bit of the wood by hand. On HUGE logs I cross-cut them to make them more manageable and easier to split or work to the splitter (pics below). We also use a John Deere tractor with a bucket and dump trailer these days to take some more of the work out of the equation........Cliff
The upper 40' or so of the tree below is in the 30" range and I whipped it with my Echo CS-590, 600 and 620PW. The CS-590 did almost all of the cross-cutting/noodling to get the huge pieces manageable for the splitter. I wouldn't attack a tree of this size with anything less.....
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