Lately, Ruy Lopez and KID if I can. However, I'm consider others:
Inigo Montoya: You are using Bonetti's Defense against me, ah?
Inigo Montoya: Naturally, you must suspect me to attack with Capa Ferro?
Man in Black: Naturally... but I find that Thibault cancels out Capa Ferro. Don't you?
Inigo Montoya: Unless the enemy has studied his Agrippa... which I have.
What is your preferred/favorite opening opening, both as white and black, and why?
Call me old-schooled but I always open 'e4', when playing with white pieces and 'nf6', when playing with black pieces...