I 愛 the Insidious trilogy so far. My favourite horror movie followed によって The Conjuring. I recommend あなた to watch the third part as it has the perfect jump scares and sound effects. It is the prequel of the series and is set before the Lambert haunting.
It freaked me out the first time I watched the 1st movie. Didn't pay too much attention the 秒 one, haven't seen the third one in awhile but I guess it wasn't the worst movie.