Integrated vs distributed

If you were starting a new company with say 3-5 employees, for your base set of tools, would you chose an integrated solution or a distributed one. By integrated, I mean something like GSuite or Office 365 which has emails, files, tasks, chats etc. Or would you chose something that's split across multiple apps such as Slack, dropbox, Gmail, MeisteTask etc. Just wondering which one would you prefer and also what set of tools would be ideal if you were to start over.