I’ve read the PUFA content depends a lot of the feeding and pork is all over the place…
I can buy lard from a local farm I trust but as I get some from my pork anyway, I use that. I can’t afford to cook with butter but I wouldn’t do that anyway, I like lard and I would burn butter 
I need to eat all the lard I get with my meat (and that’s pretty much) as my food cost is high enough for me so it’s a moot point how good is this - but I can’t possibly know that anyway as I know about nothing about the pork I eat… I stay away from supermarket lard, that’s sure, it tastes bad (it did many years ago when I was fed bread and lard here and there, I never bought any looking at the ingredients) and the farm lard is cheap too. But as I wrote, I use the lard from my sadly supermarket pork, my body is still happy with me if I keep my carbs low… And I’ve read I have better chances with our European pigs… But there is still a big difference between them. But I buy what I can. The definitely not high-quality cheap pork but it’s still tasty and the lard is okay too. (But NOTHING gets near the lovely super smooth piglet lard I got from a pig farm piglet once :D)
Good lard has a stronger flavor than butter indeed (makes sense, fried fat, fried skin is tasty and rendering lard is frying the above stuff, at least for normal farm lard and my rendered lard even meets a lot of meat :D) but they are quite different and while I love lard, I need some butter too for its subtle, different flavor. But the difference is smaller at cooking especially if eggs are involved, eggs have a strong egg flavor, after all (at least the good eggs I buy)… But of course people have different sensitivity…
Mmm, lard 