Unfortunately Google consistently for years is going ahead introducing new functionality in Google Docs/Drive, but without making available functions work on acceptable and usable level.
One of the things is that what came recently with fanfare that all newly uploaded files have been processed, but now NONE of uploaded image/PDF is OCRed. You simply can not rely on Google provided services. Sometimes they change a code and remove/adjust functionality that it doesn't fit your needs anymore. But even more often Google changes code, and then you get various bugs - and no real contact point where to address them. Somehow I managed to get -surprise, surprise -an online direct contact with support staff for Google Drive - but chap on receiving age was just disaster - he knew even less than me about the product he intended to provide support to customers. To "scream in the desert" for help with bug on Help Forum - I think you have less than 1% probability that it will attract Google staff or some contributor with senior level will elevate your request to them: I posted close to 100 times about different bugs, NO SINGLE respond - so it's just complete waste of time.
Microsoft WebApps DOES work for functions they provide, eg.Latvian spellchecker - in Google you even don't know if there is or not spellchecker in Docs - the fact that the language is in teh list under File, means nothing. And if there is no spellchecker built-in, then you don't have spellchecker at all, as already two years Google Docs doesn't allow browsers' context menus in Docs.
With Google Drive Viewer you got a number of problems that normally should not be there: when viewing non-converted DOCX that contain tables that goes for many pages, then both the lower edge of page and footer is displayed very incorrectly.
Then you don't have real understanding what size of DOCX files can be viewed - 4MB viewer doesn't accept.
I confronted firstname.lastname@example.org a.k.a. Jake Smith - the live Google Drive support with this issue, I have given a shared link to the uploaded file, that couldn't be viewed - and I've got some garbage response, like did you try to download the file ..??? The moron on receiving end even didn't try to open the file in viewer and investigate what the problem is.
And you don't have any contact pint where to address the problems with individual files that are not handled properly, mostly in viewer, in Google Drive.
When it is a doc, spreadsheet or presentation in internal format, then at least you have the option to Report-Issue under the help. For problems with individual files in Google Drive you just left on your own, or should post in Help forum - then that post without link to the file is meaningless, or you should compromise your privacy and post the link to file.
In respond to my inquiry about the general MAX SIZE limit for files for Google Drive Viewer, during two sessions that moron from Google Drive support team finally learnt from me that the size limit for viewer is 25MB - and thus it corresponds to Gmail attachment limit. I have to press and squeeze him hard to come to software engineers and check the issue, as he tried few time sin a row to sell me size limit for conversion of files. Finally, they updated Help content on the issue after this discussion.
This makes support service non-existing.
Therefore I can't recommend anyone incl.myself to use Google Apps since quality is such inconsistent and you will hardly will have any reasonable support staff respond if you will need one.
I acme in length about that to illustrate that basics in Google Drive doesn't work, but they still come forward with more new features.
These new features are introduced and presented in weird way: would be here no post about e.g. Trello, I would never knew that Trello support Google Drive integration, as Trello is not listed under Google Drive app - it is just Chrome App. So, again, Google employs many seemingly bright people, but unable to organize basic things, even for teh ebenfit for its own very business - to mark somehow a Chrome App in Chrome Web Store that it got Google Drive integration.
Basing on all this, as basics doesn't work here, I am considering to move completely to Web Apps/Office 365, especially as Windows * is coming, but Android is such a pity experience, reminding Symbian for it non-ergonomics.