Today I pulled out my third orange ring of orcus from a chest, that brings my total +5 ring collection to 8. All of them utterly useless to my build.
Please implement an exchange in underdark somewhere, it's been long enough, and the new rewards are more than ample to keep people queuing for emo, demo, pom and throne. I don't mind if the exchange requires 2 or 3, or hell, even 4 unwanted +5 rings to purchase the ones you actually need.