Is your dog a 'drop' or 'leave-it' kind of dog?

Recently I've been having some problems getting Salvador's chew toys away from him. I think the problem started when he became very possessive over them when Henry came around and would almost use it as a 'you cant get this' game.
This wasn't too much of a concern to me then, but when we got to my boyfriend's parents house on Sunday (Franschoek) and I had to try and intimidate their poor dog's chew toy out of Salvador's mouth (there was even some growling...), I decided I should make work of this situation.

Apart from the fact that he might actually bite someone for trying to take something from him, I just think it's something that, with a little effort, all dogs should be able to learn, so I found these two different methods and now I'm trying to figure out which one I think is more efficient. If anyone has an opinion about them or an alternative way...

Watch the YouTube video bellow or read what I found on Cesar Millan's page here .