The refactoring and auto complete features of Resharper are pretty good. Have been working professionally with it in Visual Studio for years now. But to be true, I couldn't tell what had been added to VS in last years to make it superfluous maybe 😂

In private, I use Raider, as it is a pretty good replacement for Visual Studio, has Resharper features build in and does cost a lot less than VS. Also, it's performance is a lot better compared to VS with Resharper plugin.