I mostly use RooCode nowadays, which works well enough with both Claude and Gemini and other models, even locally hosted ones. Decoupling the LLM vendor from the tools might miss out on some finer features, but also gives me a little bit more freedom, much like how you can also do with the Copilot plugins and Continue.dev and a few others.

Note: all of them sometimes screw up applying diffs, but in general are good enough.