First: Woo-frickin'-hoo!!!!!!!!!!!!!!
Second: Most annoying? No one hates chaos dragons like me, but I'd have to put the rust dragon on the most annoying pedastal (so he can straddle on the most useless...even the white dragons consider them annoying little cousins...). I just think the Pyroclastic dragon is goofy (redundant when talking about planar dragons, I know).