I'm going to sell some stuff to buy one of these and I can only afford one for right now. Now, I realize these are two very different mics but the thing is I need a mic for both cleans and growls. The AT4040 is looking good because of the fact that I could use it for acoustic guitars as well but the SM7B is... well, it's an SM7B. I guess I'm mostly interested if anybody has had any success in recording growls with an AT4040