Some things you just have to do for yourself to decide if they are worth it.
GREEN HILLS I enjoyed, more than once. TRUE AT FIRST LIGHT wandered so much it lost me. It now gathers dust. And posthumous doesn't bother me. ISLANDS is one of my favorites still.
But yeah, as an American big game hunter, you probably ought to open GREEN HILLS, and give it a go, since it's an opinion you wanted. That way you'll know for yourself.