I dunno
Though I don't have either, I think Zach means After Effects is a better program to make emulations with. For example, when you see Tyler make his emulations, he normally states that he has used After Effects to make them.
What I want to know is how you all can afford it. It's over $500!
Andy is correct. It would be Adobe After Effects. However, don't feel so ambitious right away to use it. It took me a long while to know how to use Adobe After Effects in the fashion of which I chose to use it, and believe me, I am still learning. Also, if you're considering creating emulations the way that me, Chazz, Derek, Tyler, etc create them, you're gonna need to know how to use Photoshop beyond how a novice user uses it.