Sublime Text 3 is absolutely amazing. There are hundreds of plugins. packagecontrol.io
ST3 launches instantaneously as opposed to bloatware VS. And I don't blame you for limiting anything from MS. But as a sanity check, MS "Visual Studio" on a Mac is not the same as for Windows. The Mac version is really xamarin.com and its really designed for C# running .net for Mac and Linux. Presumably open source.
I would use it if I was programming C# (again not for Windows, but Mac or Linux). I try to limit anything Microsoft if have a choice.