I've been using Empyrean Bellicose for awhile, and it's a lot more useful then you'd think. It's amazing in confusing people in crucible and giving you a height advantage, and for PvE when I'm stuck behind a rock it allows me to jump and shoot the enemies suppressing me, and I've found Enemy AI have a harder time hitting me while I'm in the air, but that may be my imagination, you also get to keep a bit of momentum when using it, so Control plus the helmet allows me to burst through rooms, dodge enemy explosions in the air and shoot at the same time. It's especially useful against melee or enemies with exploding bullets. I use it when I'm using the sunbreaker class, since I don't have an exotic that helps that sunclass like I do for my defender and striker classes. It's amazing in the Sunless Cell strike.