- Integrated ReSharper.
- Far better performance (it isn't even close)
- Doesn't take 30GB of disc space up. Visual Studio has been a massive disc space hog since forever. Rider is a few hundred megabytes IIRC.
- Less bugs (Visual Studio has been progressively getting worse).
- There was better tooling IMO around NuGET.
Eeeeeeh...it's not quite roses and rainbows on the Rider side either, and that's coming from a Jetbrains fanboy. (Although admittedly, I'm not really up-to-date on the current state of VS in day-to-day work)
But yeah, the coding/refactoring support (Resharper et al) and general quality and integration of tooling (database tools, package managers, version control, debugging (esp. multi-process) etc.) is the big one for me.
VSCode gets you 90% there.
But IMO Rider gets you over 100%.