I'm happy with dropbox for most things, but as an ASM, I want my run sheets in google drive. I can export it later for sake of having it all in one place, but I need to be able to edit run sheets on the fly during tech, and the easiest thing is to have it open on my phone. This is so much more convenient for me than carrying around paper and pencil (plus I don't have to go back after rehearsal and type up my notes, if I can just put it in my phone immediately). If we're coming up on a shift that we've never teched before, I want to be able to quickly type up who is assigned to every aspect of the shift, and exactly what they do. So I make sure all crew/PAs/PSM are invited to the google doc, I maintain it, and then once everything's actually set I'm happy to export it to Excel and save that in the dropbox... but it's just so convenient to edit the spreadsheet from my smartphone!