Probably the Sicilian because of how many variations and theory it contains.
But you can stick to 1 variation ngl.
nope
You can't just nope that.
I know 2 variationsfor white who make black rethink plqaing c5 ever again
Humble my book.
The good ol wing gambit and the good ol mcdonnel attack. Quite interesting! But i wouldn't say its the best.
Fun fact: You got out theoried in the KERES ATTACK, SERIOUSLY