Chezai Noodle Spicy Sauce and xo sauce each have their own characteristics, and the exact choice depends on personal taste and preference.

1. Che Chai Noodle Spicy Sauce: This sauce has a spicier flavor and is more spicy, which may overpower other flavors. Some people may not find it flavorful enough, but some like the tangy texture.

2. xO Sauce: This sauce has no chili peppers, so it is not spicy and has a strong seafood flavor. The xo sauce has a richer and more distinctive flavor than the carne asada spicy sauce.

Overall, carne asada spicy sauce and xo sauce differ in flavor, and the exact choice should be based on personal taste and preference.