I don't have many options for good Sunsinger exotics unless i use gauntlets, but i really wanted to rock the IB gauntlets. Otherwise Ahamkara's claws and sunbreakers are pretty good.
-I can't get Praxic Fire
-Starfire is pretty useless.
-I have worn Voidfang vestments to death and they are intended to be used with voidwalkers, even though it works just fine for PVP sunsingers.
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If you want to use your super a lot, Obsidian Mind will still boost your recharge (you just don't get the loop effect where nova bomb provides recharging). If you prefer to hold on to your super for self-res, Light Beyond Nemesis provides good team support perks. Just to provide some alternatives to the Veil.