Some parts are too recent to properly evaluate, but I have a feeling Brad Cromer or Worrest part will probably hold up and be my favorite of this year.
For whatever reason, Shane's stuff from his 9 days or so in Melbourne labeled Not a New Part got me really hyped, and his Levels part was absolutely insane.
Also really enjoyed Wes and Even's shared part, Stevie Perez and Manchilds "The Flare" parts, Jamie Foy's "Welcome to Deathwish part", Franky Villiani's New Balance part, and a bunch of others I'm probably forgetting right now.