I mainly use chat(GPT). I used copilot's free tier for a while. For making a quick low effort webpage with some nice styling it worked well. Probably better than chat, since it could touch all css, html and JS that are sprinkled around in different files. But that's not my main job. Overall, I think my work is mainly "deep" problem solving. I don't necessarily produce much code per day. The chat is a helpful aid for thinking, copilot not as much.
Another thing I've noticed is that writing the code myself has often a net longterm benefit. For a while I was generating all kinds of python scripts for converting data between formats etc. I'm not good with python, but LLMs are, so I just used that. Until I ran into a wall too many times. Eventually every "temporary script" kept growing until LLMs could no longer provide what I wanted, and then I was stuck. I would have to go through the whole code from start and internalize it fully to be able to get the thing done. I would have saved time doing it myself from the start. So now I mainly use the chat just to ask about available functions, syntax, etc, but rarely use the generated code. IDEs are not great for this kind of approach in my experience.
Another thing I've noticed is that writing the code myself has often a net longterm benefit. For a while I was generating all kinds of python scripts for converting data between formats etc. I'm not good with python, but LLMs are, so I just used that. Until I ran into a wall too many times. Eventually every "temporary script" kept growing until LLMs could no longer provide what I wanted, and then I was stuck. I would have to go through the whole code from start and internalize it fully to be able to get the thing done. I would have saved time doing it myself from the start. So now I mainly use the chat just to ask about available functions, syntax, etc, but rarely use the generated code. IDEs are not great for this kind of approach in my experience.