Liked it a lot. and Give it an "8" as well --within its category.
Personally I couldn't tell if he was truthful or not or where it might go. The ending was only so-so in the sense that it was more like the start of a whole new movie and I wanted more of it.
All in all-- tension, somewhat suspenseful, mysterious, creepy and then the "Cloverfield aspect." All pretty enjoyable and cool in my book.
2012 with John Cusack was better? I don't see the comparison between the two but I thought that one was a overdone cheese fest.