Let's start from the beginning though; the opening, and ending, title music was UNBEARABLY annoying. Theatres are supposed to be loud, that's understandable but I imagine that even owning the DVD version of Insidious 2 and turning the volume down to 1 will still make it annoying. The continuity from the first one was nice, actually made it feel like a sequel rather than a spin-off though it did feel entirely unnecessary for them to call the police after Elise's murder considering all the shit they've seen that night.
Moving on, the baby walker was another annoying aspect. I can understand and see how it's meant to scare and build tension, but all it did was go off at really annoying and inconvenient times. Speaking of tension, they really did build it in this one. They really gave off that sense that something scary was going to happen, but you didn't know when or how. The one actual jump scare in the movie actually ruined it and was annoying, when it flashes back to the night of Elise's murder, it was almost unnecessary in its timing.
Though the actual use of the ghost world/ astral plane was a rather nice touch. Especially considering how it's explained and shown that time is not a factor on the other side.
Wrapping this one up, I'm going to have to give this one an 8/10, mostly due to the fact that it broke the bad label of terrifying. I did like the fact that it did try to tell more of a story this time rather than focusing directly on horror and scares. The foreshadowing of a third felt slightly unnecessary though, why is because two's ending felt like it was wrapping up the "Parker Crane story arc." A third that uses a similar style to two would be nice but unneeded in the story's arc.