Hi anntec,
Thanks for your post, and I can see that you would like to upgrade to MYOB Business Pro or Accountright Plus, it depends on the needs of your business. MYOB Business Pro is a browser based product that you can access anywhere as long as you are connected to the internet. Accountright Plus is a desktop version that you can use even if you are offline. You may also check their features and differences at this link. Once you have decided to upgrade, please check out this article for the things you should know before upgrading.
Feel free to write a post if you need further assistance.
Cheers,
Jem