Danie Theron, I also think that it is a noisy kill. That kill with no noise only happens in the movies. A gun is also noisy so there is not a silent killer even if you do a head shot you still have the noise of the shot. That is way I like 22lr for the city. But remember that if we have a very long SHTF then ammo may run out so you need to have some very good knifes.