I liked the first one and the last one. But I do have a problem with most of these movies. I really don't see the Design. Many of those deaths happened because of unavoidable accidents or because the characters were stupid, not because death was out to get them. Some examples:
in the first one, a girl dies because she walks in traffic and gets hit by a bus. People die like that all the time and the reason is not supernatural, they weren't paying attention and that cost them their lives.
in the 2nd one, that boy dies at the end when the barbecue grill explodes. It really looks like it wasn't properly maintained and there was a gas leak, which would've happened anyway. Gas appliances have exploded before.
in the 3rd one (I think) two girls get fried inside their suntanning beds. That happened because they broke the rules and brought a drink in the room.
in the last one, that gymnast dies because she steps on a screw and the fall breaks her bones. That happened because the gym was in a state of disrepair, not because of some supernatural design. That place was an accident waiting to happen;