1. Petals (by quite a bit)
2. Twister
3. Sunflower for Alfred Roy
4. Languishing
Petals is pretty much her first or second best written song I'd say.
Twister has a strange, unique feeling to it and I don't buy her story about the song entirely -- there is some darkness to her life as well. Beautiful vocal too.
SFFAR is very touching and wonderfuly written and one of the only times I have felt her charmbracelet era scratchy voice was suitable for the material.
Languishing is the least personal of the bunch and the most basic, but it's still a nice, intimate song (as intimate as she'll place forward lately anyways). In a way it almost sounds like a song directed at her fans.