I used InSync with a mounted drive. I rebooted and it ran before the drive mounted and deleted my entire online google drive contents and then deleted the local files when the drive mounted.

The google UI is such garbage that you can't undelete 1000s of files so I had to write a script against it's API that ran for a few days restoring everything. Sucked.

I've been using it for the past year. Works perfectly find, no complaints. Definitely worth the $40CAD I paid,even if I plan to move away from Google Drive in the near future