Hi Adrian,
Adagio in general will give you a much more robust financial accounting framework. It is flexible (can handle multiple financial scenarios simultaneously), provides powerful reporting (Adagio's biggest strength in my view is its financial reporting that can be customized to any scenario), and it is user friendly. If you are feeling hampered by QuickBooks, Adagio is a great solution. That said, Adagio is batch based and QuickBooks is live entry based, so it will feel very different at the beginning.
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Lyndon Olfert, CPA, CGA, CAFM
President - Aboriginal Strategies Inc.