Hypothetical question as an Abyss aggro player. Let's say I have a board of just a 1/1 bat. I play an Aragavy from my hand, and it totally clears my opponents board.

What is the best way to spend an evo-point in this situation? Is it better to evolve Aragavy (even if he nothing to rush into), or is it better to evolve my bat that swings to face. With the bat-evo line, the evo-point grants me 2 extra damage to opponent's face, and I get to drain. With the Aragavy-evo line I get one extra point of face damage versus evolving the bat.

I'd appreciate advice.