Which level 7 creature is the best, and why?

Please provide more informative posts in this thread... otherwise, one-line variations on the theme of "I said so" will die out... If you say that someone is stronger, then according to what parameters, with whom did you compare, etc....

As for the topic, I've always been annoyed by the simple comparison of a hydra with other 7th-level monsters... It has a completely different focus... let them compare 5 hydras and 5 squads of 1 archangel each, I think the results will be different than 5 on 5...