Honestly with the talk lately you'd assume more people would go for Total Mimicry. Though I can't deny the supreme of Superior Adaptation. The fact they can go without limits puts them on a similar bench with Total Mimicry but I lean more in support for Superior Adaptation considering that, in the name, it adapts to anything and everything at a superior rate. Anything that's thrown at them, they'll adapt to it just as it's flown right towards them.
What I would want in real life? Superior Adaptation.