I have 300+ hours between all of them and have completed them all several times.
I didn't like MISERY much, once I got the AN-94 and upgraded it a bit it was about as difficult as any other mod I've ever played, that includes People Soup, but that isn't why I disliked it, I disliked it because STALKER mod makers seem to have this concept that their mod can only be difficult, scary and atmospheric if they make everything visually disgusting.
I hate to break this to you, guys, but radiation doesn't magically cause plant-life to decay and turn brown, Pripyat is like a lush green forest these days