I was taught to not charge attempted murder unless you had proof that the person intended to kill. If the suspect was shouting something along those lines, then you went with the attempted murder charge. Otherwise, you went with agg assault because it is much easier to prove. The culpable mental state is lower. And the penalty for both is the same, so go with the easier one to prove.
I do know some people who prefer the shotgun method of charging them with everything they think might apply, hoping more will stick, but I was taught to only charge what you were sure you could prove. I prefer the way I was taught as a philosophy also.