I recently discovered the Coc plugin for vim, which brings VSCode-like smarts to vim. I can finally use #vim full-time instead of #VSCode, which has become bloated and slow over time. Coc has a marketplace with a large breadth of language support. In a like-for-like comparison, vim uses 500Mb less RAM (including language server) than VSCode for Python or Java editing (with intellisense), and is much faster. I also managed to set up vim for editing and uploading #Arduino and #esp32 code by integrating with PlatformIO.

Conqueror of Completion
https://github.com/neoclide/coc.nvim