The Fiskars is a great tool but it is not the almighty tool that alot of people make them to be. ...don't count on it to be your only splitting axe.
I agree.
I have a Fiskars X27, and while it's a great tool for the right wood, it ain't the holy grail of splitting tools that some make it out to be. Yeah, I can swing the X27 about twice as long as I can swing the 8# maul... but if I have to swing the X27 two, three, or four times to split the same piece that the maul would handle with one swing... where am I saving time, or energy?
Seriously though, I do the vast majority of my splitting with hydraulics. When I decide it's a splittin' day... well then, that means
all day. I'll start at sun-up and work until mid-afternoon or so... and swinging anything, even a relatively light Fiskars, for 8-10 hours just ain't gonna' happen. Yeah, fresh out of the gate hand splittin' is faster, but coming down the stretch hydraulics will pass you while your leaning on the handle... tongue hanging out.
About the only time I hand split is when I'm cleaning up after a storm or some such... when there's just a small pile to be split, not worth dragging out the splitter. Red Oak, soft maple, pine or fir and I'll grab the Fiskars... White or Burr Oak, hard maple, elm or Hackberry I'll grab the 8# every time... And with ash, cherry and walnut I'll carry them both to the pile, sometimes, depending on the tree, even those need the extra oooomph that only the 8-pounder can deliver. I don't get stuck in a rut thinkin' I have to modify my technique so the Fiskars can get the job done, like walkin' around the log "slabbing" pieces off, I know right after the first couple swings when it ain't the right tool for the job... I toss it to the side and grab the correct tool.