I ended up disabling copilot. The reason is that the completions do not always integrate with the rest of the code, in particular with non-matching brackets. Often it just repeats some other part of the code. I had much fewer cases of this with Cody. But, arguably, the difference is not huge. But then add on top of this choice of models.
For instance, I'd often get a problem where I'd type "foo(", and VsCode would auto-close the parenthesis, so my cursor would be in "foo(|)", but Copilot wouldn't be aware of the auto-close, so it would suggest "bar)" as a completion, leading to "foo(bar))" if I accepted it. But I haven't had this problem in recent versions. Other similar papercuts I'd noticed have been fixed.
I haven't used Cody, though, so I don't know how they compare.