Which monster do you like the most in Heroes 5 at level 7?

To be honest, I like the emerald ones, but the crystal ones look terrible...
By the way, the price of the green dragon is 2500, which makes it the cheapest level 7 unit after the bone dragon. Usually, the price of a creature indicates how strong it is, and as much as I like elves, I admit that their dragons are slightly weaker than the dwarven ones...