The original The Thing is one of my all time favorite movies. I'd actually, and honestly, wish I could watch it more often but my memory's so good I think I've got the whole memorized shot for shot by now. ~Highly~ recommended. Netflix away!
I think what impressed me about reading the original short story was how both movies clearly sprang from it. That's cool. But, specifically, which one is more true? I don't know if I could say. I certainly prefer the original so I'm not sure I could be unbiased here.