I like my 27 ton Dirty Hand tools vertical horizontal

it has split everything

if I get a 4 inch in diameter chunk that is too long I just put a round on the splitter and turn the too long piece side ways and just let it push right through it cross grain , faster than starting the saw.

I am probably younger than you and got a lot more time I just got 4 tools axe, sledge-axe, wedges, and my biceps.

I think of Kinetic as the most of your wood is fairly strait and not bigger than about 16 inches in diamiter 8-12 being ideal

Hydraulic I think of as better for the twisted , and big

I get some that I have to quarter just to lift the 1/4s stuff better than 3 foot in diameter

I Noodle these big ones with the chain saw Noodling is cutting with the grain it makes the long stringy chips aka noodles

Checkout some of these processors and splitters some are downright dangerous and others are pretty ingenious.

I think Ill stick with propane if I had to use some of those.