I use Zed as my primary interface to "actually doing project work" LLM stuff, because it front-ends both OpenAI and Google/Gemini models, and because I really like the interface. I still write code in Emacs; Zed is kind of like the Github PR viewer for me.
I'm just starting to use Codex Web for asynchronous agents because I have a friend who swears by queueing up a dozen async prompts every morning and sifting through them in the afternoon. The idea of just brainstorming a bunch of shit --- I can imagine keeping focus and motivation going long enough to just rattle ideas off! --- and then making coffee while it all gets tried, is super appealing to me.