It really all depends. I suppose. Because in Predator 2, the Pred was holding that chick by her hair, when Harrigan was chasing him, and the girl screamed, then he was like "Don't worry, I'll save you!" Then you see her head get cut off. I think that would suck.
Then there's the wake up after being choked out by a little spider thing, having an embryo and bodily fluids injected into your torso through your mouth, whilst creating a small baby alien with sharp teeth and acid blood, where it would then painfully explode out of your chest shortly after you wake up would also suck.
It's that straight up thing, where you see the blade coming towards you, the plasma being shot from a different arrangement of atoms, that would be scary, if only for a brief moment.
Then there's the wake up, feeling sick, and give birth even when you're a guy, and then die shortly afterwards.
Decisions, decisions, eh?