Good afternoon JN92,

Thank you for reaching out to the QuickBooks Community! Ultimately the decision is up to you. C:\Users\Public\Public Documents\Intuit\QuickBooks\Company Files is a simple default that our program use. Yes, it will be, and when doing a backup, QuickBooks will ask you where you would like it to be saved as well. Here is a handy article that can help you with moving your company files to another computer. 

Don’t hesitate to leave a comment below if you have additional questions about QuickBooks, and I’ll get back to answer them for you. Have a good one.