PyCharm is much more sluggish. And I have had a lot more luck using dev containers in VSCode than PyCharm. In general, I find the process of getting an interpretter set up much nicer in VSCode.

Both work for Python syntax highlighting. But I've had several bugs in PyCharm that took several versions to get fixed. To be fair, individual extensions in VSCode can also have bugs, but I've generally found it easier to work around issues because it is less "bundled".