THE pot of gold for sci fi foley goodness: a massive playground of musically mechanical audio including drones, textures, FX and incidentally melodic events.  I appreciate that the collection is huge but not bloated in that the files themselves are of ideal length and won't overtake a project's timeline.  So much loop-able material here and the categorization keeps the vastness in order / easy to maneuver.  It's difficult to grasp just how massive this pack is and because of it's size + quality it's one to return to again and again and keep finding new gems.