Has to be Predator 1. 2 has some good bits and a new setting, but isn't up to par with the original by far. Why base it in 1997? Would have worked just as well in the 80s or perhaps based in Columbia with an urban delta force thing, I don't know

, but I can't help but think if Jim Cameron had jumped at it as with Aliens it would have rocked.
Arnold had this huge powerful presence on screen (Conan, Terminator), as well as physically, and that made you think, wow if this big brawny powerhouse commando whose trained and combat proven has a tough time, this alien is one bad ass! Arnold's persona elevates Predator's menace.
The Predator in 2 is updated and looks fiercer, but seeing Glover put it in its place so easily makes it look wimpy and unconvincing. You just know if Arnie fought this Pred that he'd aced it in the first round. Many people stress it was Glover's brains that won in the end, but when I see his character on screen I somehow doubt that.
On a side note I always thought Paxton's character should have killed it and looked at it and said' "you're in some real pretty shit now huh?" lol!