I'm with the HB totally - but it's hard to go up against the Pib... that three prong little white thingy that hangs on the wall by hope and prayer - I don't have good experience with them.... Luckily I have a very handy husband around - overengineering is the thing. Drill, bang a green plastic thingy in the hole, then, some other kind of screw that gets screwed in and sticks out just a fraction with a big head on it, and I can hang my picture...
When you have to fix the wall after, screw out the thing with the big head with a screwdriver, pull out the green thingy with a pair of pliers.. that is if it does not come out with the screw with the big head, and fill the hole with putty. Touch up paint, and you're done...