Every time when Opus 5 needs a design decision and presents me with suggestions/recommendations, I switch to Fable and ask it to think again, and it almost always replies something like "Actually my previous suggestions were wrong" and describes in detail a bunch of ways in which Opus 5's suggestions were indeed complete garbage.
Strange that i do not experience this. Its been great in my experience. But that may simple be because i switched from typing most of my prompts. To just dictating my prompts in a long and convoluted way and letting the LLM extra the information.
It allows for much more context that flow with your thoughts. Where as when you type, you tend to shorten you thinking process trying to get the bulleting points in, but that often ignores smaller things. And then you think "i can add this later", but that never happens because rabbit chasing the LLM.
So far all the suggestion that Opus 5.0 offered me, always aligned with what i wanted. Its not just Opus that i noticed this with.