I mostly use Visual Studio and Codelite. Codelite's code-completetion is very powerful and there are some features that are hard to resist, but this IDE is not getting much recognition as it should be, it's also actively developed by a couple of developers. And some plugins are developed by communty, like Zoom Navigator in the screenshot. A sample screenshot of codelite and visual studio side-by-side. I just hope more people use codelite and contribute to this project.