I'm not in the least surprised that other reviewers either love this or hate it to bits - I also bet that it's the younger users to whom the nature of the visual narrative of the film - the way it's all told to us, the viewer - may seem a bit dated. And to a point, they're right - "Angel Heart" is totally an eighties film, a film of the decade in which the movie world was discovering a new visual language in video and playfully indulged in experimenting with its new toy. It was literally speaking to a generation straight out of MTV classrooms and workshops and is in that sense very similar to stuff like "Betty Blue". And true enough, there is a lot to remark on what can today be seen as a slightly poseur-ish "one too many revolving fans, angularly lit staircases and heartbeat sounds in the soundtrack" kind of thing. However, "Angel Heart" does carry a tremendous amount of energy thanks to its imagery, which will stick to the viewer's mind in exactly the same way a sweaty shirt sticks to the body in sticky weather. Besides, the impeccably drawn cast led by Rourke does a truly remarkable job - that's beyond question - the sets are great, production design and cinematography are very evocative, the soundtrack is memorable and the story is one of the crucial ones. I personally love it.
Give it a go by all means.