I have recently done my Sage Business Cloud Certification and I must say its worlds apart from QBO. As someone that is looking to start my accountancy practise and therefore shopping around for the best Accounting software QBO will be last on my list. Its a shame really, you really need to keep up with your clients demands. EG. Allowing for customer / Supplier credit limits to be set up. This is such a simple request but is of great importance to our clients.