Which alternate upgrade for Inferno do you like the most?

I noticed something here:
If you choose to upgrade Imps, then you need to take the Lords upgrade, and vice versa.
In my opinion, this combination is good. The hero usually has enough mana anyway, and if not, you can absorb corpses... but Pit Lords (that's what they're called in my version) lack mana.

I'm more inclined towards the old versions in any case, because they steal more mana (we'll definitely leave the Knight without magic, the Orc without spells, and force the Elf to conserve mana, etc.). But the new Imps are good, especially when combined with a surprise attack; they mow down enemies in droves, especially the first 3 levels, and IMO they are more effective against mages when you need to end the battle as quickly as possible.