I have a potentially new client that is interested in my bookkeeping services.  However, they are currently using QuickBooks Desktop Pro.  I have dealt with clients remotely both using QuickBooks Online and QuickBooks Desktop (accessing remotely using Remote Desktop Connection setup by the client).  I am wondering what my options to work remotely for this new client?   What is the best and easiest way to access their QuickBooks off-site?  Thanks!