In my relatively limited experience with PyCharm and GoLand (with a hint of CLion/IDEA), the individual IDE's make working with a language much simpler and straightforward. Using the language plugins within another IDE adds a few layers of friction with trying to find settings, panels, etc, whereas the IDEs offer workflows OOTB designed for that particular language.

Sorry I can't provide specifics, it's been a hot minute since I've used a JB product but I did enjoy my time with them.

Well, Ultimate is very java specific out of the box. Doesn't help that I use it for java as well. I could possibly have multiple profiles for different use cases, but why? All Product bundle after 3 years is cheap enough that paying for it isn't noticeable at all.