The real elephants in the room with Xero is trying to download all your data and making a proper backup.
To my knowledge there is no easy and simple one-click way of making a backup directly in Xero. And should Xero go “pop”, and we have seen that with companies, then so does all your data and financial records.
Not a good thing and I am sure my tax office would take a dim view if I said the equivalent of the “dog ate my homework” (i.e the software company took my data).
So I use https://www.getboxkite.com to automatically download backups of data and invoices etc etc from Xero to my Dropbox.
Anyone moving to Xero should budget for, and use that service – or one of the similar ones that are offered.