[norcalli]

All completers will be able to utilize floating windows immediately, so it's not a special feature of coc.nvim. Using LSP is also not unique to coc.nvim. Deoplete, for instance, supports both as well. I personally have no interest in using coc since it's a javascript based project.

[spraak]

Yes, I wasn't trying to say it's only possible to use with coc.vim, and neither was I trying to say that LSP is unique to coc.vim. But I would not recommend Deoplete.

[shazow]

Why would you not recommend Deoplete? It works well for me.