PL Sora is a slight upgrade to iVivi on Power Keyblades if you get EA40 on him. Less SP regen, but the buffs last the whole turn, so if you use under 8SP anyways and typically put iVivi in Slot 3 your 5th Medal gets more of a buff. It's really good on my base Fenrir setup as a result, as it lets me put PLS in Slot 2 and just wreak havoc with KA10, Saix B, and my WOFF Squall or HD Riku (he has both -60 traits and is Guilted, so he's good for single target missions) in slots 3, 4, and 5. I still get infinite SP and deal bunches of damage, especially to anything on the ground. Will be even better when guilted next week.