This game is well worth $20. I got it release day and it seemed to me that only IGN had an "issue" with Downpour (from what I remember of reviews), giving it a "Bad" rating of 4.5. It felt more like a Silent Hill game to me than Homecoming did. There were a few parts that I felt were pains (the two "sliding" areas, escaping from the Void. To name a few without spoiling), but overall it actually does warrant replay to try and get all the endings!
The music was also great for it to not be done by Akira Yamaoka too.