At work, they gave everyone a GitHub Copilot license whether they wanted one or not, which meant it started spewing nonsense on all our PRs. (I had them remove my license again.)

I don't use LLMs, but a coworker who does said that Copilot was one of the worst of the lot.

I find the differences between the CLIs pretty minor. GitHub and Kiro are the only ones allowed at my job, and GitHub is fine.

What many people who don't use the GitHub Copilot CLI don't seem to be aware of is that it's not limited to GPT models. I mostly use it with Gemini and Opus, for instance.