HI
One thing that makes the new 7481 (large Wyvern) one of my favorites is the flight profile you can pose it in. The body and feet are poseable in such a way to really give it a streamline image. The old ones seem to not even be able to fly with their undersized wings (easy imagination solution) and they have a strange flight pose. The large black ones neck is so crooked he looks better at eating things than flying but he does have the most beautiful wings.
I see that the Nessie was mentioned as a dragon type creature so I am surprised nobody mentioned the 3 headed beast, our youngest's favorite. The one thing I find annoying is its skin flaps (or what ever you call those) keep falling out. He is the kids favorite bath monster.
Rasputin "The Mad Monk"