1. Nymphs. Mutual resurrection is a great ability. Besides, the Swarm doesn't really take anything away.
2. Battle Mages have better combat stats than agility, although in a fight against a strong unit, the new ones are definitely better.
3. Old Elves. Two shots, after all.
4. New Druids, because of the "Channel" ability.
5. I take the old ones, and if I'm playing against Haven, then the new ones.
6. I take Wild Ents. Defense into attack is a good trade.
7. I take Crystal Dragons. Their attack is impressive.