The 2x spicy ones are so much spicier than the "2x" would make you think, can't imagine the 3x spicy ones could possibly be any fun and I say that as someone who very regularly eats spicy food
I should also specify that I don't flinch at most Thai chili pastes and dishes, but the 3x spicy Buldak made my teeth hurt. The cheese one is nice if you doctor it up with extra cheese, green onions, garlic, and maybe some kimchi.