In short - is it worth it?
xxx: I get it!
xxx: I'm not a screw-up!
xxx: I just don't know how to prioritize things correctly...
If there are 4 cons, that's better than any tier 3 creature, as has already been correctly noted. And if you take them, take them all (a larger sample size means less variance). 10 angels at level 134 are better than 5 creatures of level 6 at 121, at least they are more stable.