I bought some Magnetix a few years back and was totally unimpressed with them. Some of the magnets did come out of the ends of the flexible plastic parts, but I just tossed them since I didn't have any small, part-eating kids around any more. My son was beyond that stage.
That didn't sound right...sounded like if I did have part-eating kids I'd have fed them to them. oops. What I mean is I didn't get bent out of shape and take them back.