I refer to that overall development experience too, they aren't any easier to use (Qt Creator and C++ Builder use Clang which is basically as easy as GCC) nor any faster and AFAIK VC++ compiler messages aren't even as good as those in GCC and Clang.

Note that i refer to the compilers specifically, but even the IDEs you mentioned aren't that great. Visual C++ has went mostly downhill since VC6, becoming slower and even removing features (e.g. last time i tried it i couldn't use a bitmap font) or obfuscating them (installing a library "system-wide" is trivial in older versions of VS, but after 2008 or 2010 i think that feature was removed). C++ Builder's UI/IDE also went downhill after they got rid of the Delphi 7 interface and tried to become Eclipse and it also has became too unstable and slow. It does have a few niceties (i like that when you save your project it automatically updates the header file includes at the top), but nothing that makes it worth the negatives (though TBH i haven't spent much time with it because i refuse to rely on anything with DRM so i might be missing some gem covered under that bloat). Qt Creator is neat, but i could never get used to its interface (also it is free, so i'm not sure why you included it in a list of paid products).

Also IMO all the above do not hold a candle to the older Borland C++ Builder when it came to development experience. I do not think there is any C++ development environment that comes close nor i think it is possible to make one by stitching together a frankenstein of a product out of otherwise independent bits and pieces that are oblivious about each other (in other words anyone who thinks that something "based on" Clang or GCC or whatever, stitched together with LLDB, GDB or whatever and some GUI framework thrown in - usually Qt - would fit the bill is totally missing the point).

I guess we have to disagree then.

I included QtCreator, because for the full experience you need the commercial Qt offerings as well.

Windows now has a C++ package manager (vcpkg), so you can install libraries as you want.

Actually Clang provides the necessary IDE hooks that GCC doesn't.

I also consider the UI designers (UWP C++/CX is not that bad), graphical debuggers, pre-compiled headers database, incremental compiler, incremental linker, PGO integration, and being able to drive them without memorizing a ton of switches, part of the whole experience.