To add to this, WordML is super powerful. Modern .docx files are basically just big zip files. You can easily edit this and do some crazy things and MS Word wil

To add to this, WordML is super powerful. Modern .docx files are basically just big zip files. You can easily edit this and do some crazy things and MS Word will be pretty good about reflecting this in the editor. G-Docs can have some issues with modified WordML. You can do some of these things in open formats like .odt and G-Docs will be better about this. However, there are still problems with things like pagination. So overall, I think Docs is where you want to be unless you have some super niche use case. I don't have enough experience trying to do crazy things with Sheets to have an opinion on it vs Excel though.