I've been using Claude Code with Sonnet since August, and there haven't been any case where I thought about checking other models to see if they are any better. Things just worked. Yes, requires effort to steer correctly, but all of them do with their own quirks. Then 4.5 came, things got better automatically. Now with Opus, another step forward.
I've just ignored all the people pushing codex for the last weeks.
Don't fall into that trap and you'll be much more productive.