We were very interested in Hansaworld for our online retail company as it appeared to cover all the things we wanted out of an ERP system so we did some serious testing. Overall we found the system seriously lacking in required business functionality. Both the client and server software were very crash-happy... not what you want as the backend to your business! The system itself is very awkward and looks like something from System 6 days. There was going to be an obvious cost involved in getting staff trained on using such a non-intuative and backwards system.
The most serious concern for us was that the sales people in Australia were telling us that it works fine with our local tax system (GST) when in fact our evaluating showed that it doesn't. It may be suitable for other countries but in Australia it's not fully compatible with our tax system which would cause major legal problems. Their sales people didn't seem to be able to comprehend what was required by law in Australia, nor did they seem interested. For the exorbitant price I expected a lot more.
I asked about the software at my local AppleCentre, where I know and trust the owner, and he told me that the Australian company has already been in legal trouble for providing a systems not suitable for Australia and that their overall reputation was very bad in the industry. Hardly a glowing review :( We're still looking for a good Mac based system.