For a fan work, which voice do you guys like better please comment below?

I have to honestly say, the first voice seems to be more Spitfire's character, both in canon and fanon portrayal. The things people have in the back of their minds when thinking of Spitfire is that she's quick-tempered, energetic, and one of the youngest wonderbolts to ever make the rank of captain. So the voice that feels more naturally for her would be the one that sounds lighter, in a sense. In this case, person number one.