I installed 1Password 4 on my rMBP. Love it. I downloaded the App for my iPhone and iPad and it is offering me three options to Sync. Which one shall I choose. I do have Dropbox and iCloud on all my devices. If Dropbox is what I should use, do I need to set up a special folder? As you might guess, I have not used either very much. I know there is a ton of info already posted here, but I cannot see the forest.