My advice: Don't see the 1979 version first, don't think about it too hard, pretend it's not based on the "true story", and just enjoy this great horror film. It may not be a timeless classic, but its fun. The thing I liked best about this one is that everything makes sense. There's no cliffhangers or overly complicated mystery that never gets explained. It's just 89 minutes of very frightening ghosts popping up and some surprisingly appropriate acting. In fact, I would say this movie has one of the most petrifying ghost scenes ever.(The boy in the bathroom!)The costumes/makeup were really good too. Also, I loved Ryan Reynolds in a scary movie. I thought his quirky style was a perfect complement to the cast. He makes a smooth transition from Van Wilder to Blade 3 to Amityville because he seems to just be himself.
Review of The Amityville Horror
