I 100% agree with this. Using fzf.vim for finding/opening files, searching across files, searching within a file, etc had a definite positive impact on my productivity. For reference, I was previously using netrw.
fzf is also really useful outside of Vim. I like to use it to fuzzy find git branches among other things.
As well as neovim and LSP.
I've had neovim installed for a while but really haven't found anything that would make me want to switch. Sure, I get the meta Neovim competition driving improvements in vim but I'd like to know what I'm missing out on.
It's been quite a bit faster than Vim, but perhaps Vim has caught up. I haven't checked it out in a while. Neovim supported asynchronous updates well before Vim, so also much more responsive until recently.
In any case my config is compatible with both and I can use them interchangeably.