Hiroyuki Sawano never disappoints. I like his work a lot. His anime works (Attack on Titan, Kill la Kill, Kabaneri of the Iron Fortress, Guilty Crown, Gundam UC, Seraph of the End, Blue Exorcist, Aldnoah.Zero, etc.), as well as some of his original albums, are greatly enjoyable.
Also, someone suggested Kid Icarus: Uprising's OST. Good taste. Boss themes, Dark Pit's Theme, the orchestral songs for aerial sections... Great stuff. Some of my favorite VGM composers worked on it and it shows.
Also, the first Xenoblade Chronicles OST is also great, especially the battle themes, as well as cutscene songs like Unfinished Battle and Engage the Enemy, and area songs like On the Fallen Arm, Mechonis Field and Gaur Plain.