What vocal mic am i looking for?

Im looking for a mic or PA system or vox, that when you sing into it, it has your singing effects, reverb autotune etc. BUT when you scream into it, it doesnt distort it with the effects you have .Ive heard a few people use an om-5 for this but im not sure what the rest of the set up is.Example a href="http://www.youtube.com/watch?v=7Oq3UD3rjWM" rel="nofollow"http://www.youtube.com/watch?v=7Oq3UD3rj…/a , thank you!