Which creatures from the alternative upgrade options do you choose?

Let's start with demons: 1. If the hero is a mage, use the old ones; if not, use the new ones. 2. Always use the new ones, as the old ones lack speed. 3. First, take Cerberuses; fire breath is useless against neutrals, then, if you have enough money, switch to Hellhounds. 4. Use new Demonesses only against demons. 5. Definitely use the new ones; 10 damage to everyone nearby is great. 6. Initially, the old ones are more useful because of their spells, but in the later stages, use the new ones, especially since their stats are better. 7. Use the old ones because of their speed and initiative; the abilities of the old and new ones are almost equivalent.