Got the Drake of the South Wind (To4W) last Monday on my sixth run.
Got the Bloodhoof Bull on Saturday.
--Funny story. Was landing at Joz's to farm up some elite wolf fur and BAM he spawned. So I announce it to /General chat. Get a /w from a random warlock saying "If he's really there I'll give you 10k!!!" I'm invited to his raid group of 12 or so, and most converged by the time Nakk was killed. Got my mount, but no payday. Oh well.