I've spent quite some time evaluating the different tools over the last year, for both working on my employers complex codebase, and for my personal projects. At the start of the year I found Cursor pretty unsatisfactory and unable to complete tasks. At the time I rated Cline+vscode as the best agent and experience.

Now Claude code and Cursor are the best options imo, and I would say Cursor takes the edge for ide integration. Claude, as a separate thing to the ide, does mean you can do now flexible things like run it in a script loop.

Copilot doesn't get a shout in. It's fine for autocomplete but as a full agent it doesn't seem there yet.

If you're paying for it yourself Cursor seems to give the most bang for buck as well.