IME, if you are using an up-to-date Emacs, compiled with the right libraries and options (M-x lsp-doctor), and you are using a language where the LSP support is

IME, if you are using an up-to-date Emacs, compiled with the right libraries and options (M-x lsp-doctor), and you are using a language where the LSP support is good, you'll have a good time writing in that language in Emacs. I do C# at $DAYJOB, and I write most of it in Emacs. Outside of work, the only LSPs I have tried are Java and Kotlin. The Java LSP is great at the language level, but falls down in understanding project structure. The Kotlin LSP is vice-versa. I haven't tried one where there's a good Emacs-specific plugin like Python, though I probably should.