My girlfriend and I watched these over the weekend. Same director as The Conjuring and the Saw movies.
Insidious (2010) - IMDb
They're not oscar caliber performances or anything, but we really liked all 3 movies - which is rare, because generally when the first movie in a horror series is great (like The Conjuring, which I thought was fucking awesome), the rest suck (like the follow-up to The Conjuring, which was a dud...).
Definitely worth a watch if you like suspenseful horror flicks that don't rely on gore to be scary. Plenty of good jumps in all 3 of them, a small bit of comic relief and all in all just three solid movies that are worth a couple hours here and there.