I did find codebuff a lot easier to install and get started with...usability can make or break a project. Just as a user, I think it's nice to have multiple projects doing the same thing -- exploring more of the solution space.

(I've just played a little bit with aider and codebuff. I've previously tried aider and it always errored out on my code base, but inspired by this comment I tried again, and now it works well.)