Depends on what it is. If it's getting daily stuff done, somewhat decent. When it comes to relationships (friends, family, boyfriend) not always great. So I guess anything that gets to my soft emotional spots mostly.
I have completed both games. That's a difficult question because they're all so well made, however I would have to go with Tall Trunk Galaxy. Some honorable mentions include Sea Slide Galaxy and Deep Dark Galaxy.
I haven't played the first one, but my favorite galaxy in the second game is the Throwback Galaxy (for obvious reasons), and my honorable mentions are Starshine Beach, Chompworks, and Melty Monster.