My primary bag is a 20 degree kifaru slick bag, I live on the Oregon coast, and that bag is a good compromise for what I do.
if I hunted in colder weather (30* is cold here) I would get a good down bag, and likely will at some point.
I think overall, down is the way to go in about every scenario, but everything is a compromise. I realize I will have to replace my bag at some point, nature of the beast… when I do, I will probably just get a low temp rated WM, and use my slick bag when it makes sense (probably a lot still) and have my WM when it makes sense.
what I do know, is sleeping bags are one of those things that it’s wise to buy quality… cheap sleeping bags effect your quality of life in the woods… get something you don’t plan on upgrading later if you go with down, cheap down bags aren’t worth the price tag… better off getting a good synthetic bag.
if you are somewhat careless, a good down bag might be a good fit… if you take care of your things, a good quality down bag is never a bad purchase