God's Favorite Song

What do you think might be God's favorite Psalm?

I know this is not a legit question (all his words are perfect), but it's an interesting thought to start a day.  It leads to other questions like "which of my thoughts have been pleasing to God?" or "what kind of song does God enjoy and want me to sing?"  These are all valuable for Christians who are called to meditate on whatever is good, noble, admirable and praiseworthy.

Psalm 84's Main Points:

1. God's presence is unimaginably wonderful, welcoming and secure.
2. The LORD makes it clear when we are near him that he is worthy to be praised.
3. The LORD gives favor and honor to those whose walk is blameless.
4. God gives us light and protects us.
5. The person who trusts in the LORD is forever blessed.