There is no combat fighter plane that is best for doing outside loops and if you're going to try to use it as an example of some sort of combat maneuver, spare yourseld the time because it isn't. No one is going to be outflown because the other guy did an outside loop, if anything all that is going to happen is the guy doing the outside loop may have bought himself a couple of more minutes of his life and that's it.
ack-ack