Don't poopoo Quarantine too hard. [REC] is easily in my top 5 fave flicks of all time (any genre), and honestly, while Quarantine didn't have the atmosphere or sense of foreboding like the original, but on it's own, it was a very solid flick.
It took a few viewings to really get into [REC]2, but I think it's awesome. Even the "twist" to the origin/meaning of the reason behind the craziness makes sense. Initially I wasn't crazy about it, but it works.
[REC]3 is great, but don't think it's just another [REC] flick, cause while it is, it isn't at the same time. It starts off in the FF genre, and they end up getting too tricky with multiple cameras and after about 20min it goes full on traditional cinema style. Initially I was "Aww man!!", but once it gets rolling, it works and you just go with it.
Looking forward to 4... whenever that happens to show up in any form.