I main Zoya as well. She has the best locomotion. And she is a very strong independent woman... Ok, my wife is gone. I like her FLESH. Creepy? Maybe...

Amadeus because he can bypass most puzzles/make them incredibly easy.

two boxes makes you able to levitate, which is awesome. Basically everything is made a walk in the park by using him.

That being said Zoya is the most fun.

Zoya as my main, with Amadeus for crate support. Pontius only for combat with multiple enemies.

Zoya was the most versatile of the three, plus she was great at avoiding attackers.

Zoya without doubt. It's too good being able to deal with attackers from afar, especially since you often are in a position where you can't easily move or dodge.