The "best" Spotify playlist can vary greatly depending on your personal music taste. Here are a few popular ones across different genres:

1. "Today's Top Hits" - The most popular songs around the world right now.
2. "RapCaviar" - The hottest rap tracks of today.
3. "Hot Country" - The top country music tracks.
4. "Peaceful Piano" - Calming piano tunes for relaxation or study.
5. "Rock Classics" - The biggest rock hits of all time.
6. "All Out 80s" - The best tracks from the 80s.
7. "Gold School" - Old school hip-hop tracks.
8. "Mint" - The biggest dance tracks right now.

Remember, one of the great features of Spotify is the ability to discover new music through its algorithm-based playlists like "Discover Weekly" and "Daily Mix", which are tailored to your listening habits.