Flame has been camping the Subway boss "Eumenides" for sooo long now and FINALLY found one of the +5 NCU rings. It was a nice ring to have, but with carb adding so much NCU and also finding a nice +5 melee dmg ring, I'm not using it anymore.
It is my quest to get at least one more of these rings so I can keep one and I might try selling the other.
I think they might be nice rings just to have around for guildies when they need an extra 5 or 10 NCU to get a buff.