Both layout grid and container are responsive. I will go with option2 for faster solution.
To understand the difference better, layout will create 3 divs internally (1 outer container, 1 row & 1 or more columun). Container however creates single div, so naturally its faster.
Starting with a Layout Grid is actually a good default choice. A Layout Grid can be used almost like a Container from a styling perspective (padding, background, spacing), while also giving you the flexibility to easily switch to a column-based responsive layout when needed. If the page requirements grow later, the grid can be quickly adjusted to multiple columns without refactoring the page structure. This makes Layout Grid a safe and future-proof starting point.