It's hard to choose only 6 but here's my list :
1- Iridescent
2- When They Come For Me
3- Easier To Run
4- One Step Closer
5- Hands Held High
6- Wretches & Kings
After 10 years LP has made a lot of new incredible songs and their style has radically changed. But, for me One Step Closer will never get old and will always be one of their greatest songs. So Happy Birthday One Step Closer