After just diving with them a few weeks ago I can recommend several people that seemed competent and experienced.
Aqua - This guy knows how to dive. It's my understanding he was an instructor for the Cuban Military, before coming to the US when Obama opened us up. He was a great DM, and was friendly and helpful when I changed from AL100' to AL80's... overall he seemed like a really good guy. He does have a Cuban accent, but he spoke very good english...
Phil - He's been with RR for awhile. He's one of their more experienced instructors/ DM's from what I gather. I've hired him as a private DM in the past, and he was a pleasure to dive with.
James - This guy is a beach bum (in the best way possible)... It was fun to dive with him, a very competent diver, and again, one of their more experienced staff...
Jardin - I believe he's Australasian. He know's how to dive, very competent underwater. Like Phil and James, he's been with RR for awhile.
If one of those 4 are not available, ask for Yardi or Gia...
RR does have a lot of younger/ newer staff. I'm sure they're ok, but I would really try to get an experienced person if I were you...