I really you should ask Dan, he knows much more. If I were, it would probably be FCX the preferred B (I don't remember the symbol), the dividend is paid in gold equivalent. Otherwise, NEM.
FWIW, I just listened to the RGLD conference call, it was short and to the point, no problems were brought up including during the Q&A. The best part was that they have no debt and are continuing to pursue royalty deals. The call will be available to listen to for a couple of days They already have deals with NEM and ABX, an Argentine mine and mentioned a few others. It was interesting and I heard no red flags...