If any sound is coming from your speaker stands, you've got a serious problem...
What counts is whether your speakers is positioned in a way that causes disturbing reflections of the sound, or in a way that allows the sound to reach your ears as straight as possible. Stands are supposed to put small speakers in places where the sound is as little reflected as possible. As long as the stands are solid and stable enough to prevent your speakers from falling down from the supposed ideal position they're put in, and looks good enough for your wife to tolerate them, they're as good as any others.