Right now, they aren't very balanced. In the Corruption, there are five different drops from Shadow Orbs, and in the Crimson, there are four. That's a balance problem already, but before we get to that, there's a more pressing issue with this distinct imbalance. Just hear me out. The biggest problem is the fact that the Corruption has the Band of Starpower, leaving Mages on Crimson worlds without a powerful set of accessory upgrades, and also leaving the Panic Necklace, Crimson's accessory equivalent, in the dust. The solution to the latter can be found in a thread by Baconfry, which deals with set of "Cuff" upgrades for the Panic Necklace. (Click this link to be directed to the thread.) As for the former, I think that the band of Starpower should no longer be a Corruption item, and instead be found in the Dungeon, either as a find from Chests or a drop from Dark Casters. (It's blue, so it will fit in!) If that doesn't sit well with you guys, then it can just be found in Gold Chests like the Band of Regeneration, or maybe sold by the Traveling Merchant. Now, I could just stop there and let them both be balanced 4 to 4, but that doesn't sit well with me. I think that each of them should have a Ranged gun (check), a Magic weapon (check), a Melee weapon (check), an accessory with a series of tinkering upgrades (but I just booted the Band of Starpower), and a utility item that doesn't need to be equipped (Crimson doesn't have a true Shadow Orb counterpart). To address the first issue, I propose that a new Accessory should take the Band of Starpower's place as a Shadow Orb drop. This new accessory will be called Mana Bracing, and it would restore Mana based on damage taken. The effect sounds familiar, doesn't it? That's because I think that it should take the Shackle's place in the recipe for the Magic Cuffs, so it would still require a Shadow Orb drop and an outside accessory to craft, but this way, the tinker makes sense and players on Crimson worlds have access to the Band of Starpower and the band of Mana Regeneration. To address the second problem, the Crimson needs a utility item. What I have in mind is a new grappling hook called the Meat Hook, which would be slightly better than the Diamond Hook in terms of performance. This would be a suitable counterpart for the Shadow Orb, offering slightly enhanced mobility over other Grappling Hooks for worlds with Crimson, while the Shadow Orb offers slightly improved lighting convenience. Simple, right? Hopefully, these changes would put Shadow Orbs and Crimson Hearts at a balance without heavily affecting the game. Feedback is appreciated. If you think this would be fair, let me know, and if you don't, be sure to tell me why!