Good one. I'll give my input, worth exactly what it costs.
I like a heavy strap with buckler off a harness in place of the rope--can adjust it.
The length is great! Some times you have to use a long ob chain or two straps, hook is a little longer from feet than you'd like, you don't want to run outa room.
More cable on winch than needed, this cable is soft, extra gets crushed, tangled up or screwed up.
Don' t need the winch--with it's mechanical advantage---to begin with---pullers are already one of the most abused/misused tools on a ranch. A piece of 1 1/2 inch pipe, run between two mounts you've torched outa some light plate, with a crank welded on the end is plenty. And you don't need the 'latch' on winch that keeps it from slacking off---sometimes--esp when pulling calves from cows that are tied to pickups, trees, posts, etc---you need to be able to slack off fast. Crisco in a stick---like sticks of butter, is super lube, plenty in a stick with some left over to throw away and not worry about cross contaminating.
Sparky's puller is good---everything I ever made, I change something next tme.