Originally Posted by
Mr.B 
Thanks for the responses.
A further look at their website information about the apps supported by this software, they appear to be in 3 main categories (copied & pasted below) of which the majority fall in to either mostly bronze or silver. Very few seem to be 'gold' level performance.
While I can appreciate the huge undertaking it must be to port an app to run without error on another OS, I don't think it worth my while to buy in to software that 'sort of' works
Bronze Medal (Officially Supported)
The Bronze is awarded to applications that install and run, and that can accomplish some portion of their fundamental mission. However, Bronze applications generally have enough bugs that we recommend that our customers use them with caution. Save early/save often, and don't be surprised if there are some bumps along the way.
The most important aspect of a supported Bronze application is that CodeWeavers makes a firm commitment to bring all Bronze applications to the Silver level in future releases of CrossOver. Likewise, CodeWeavers will respond to and address all bugs reported in these applications.
Silver Medal (Officially Supported)
The Silver is awarded to applications that install and run well enough to be usable. However, in our testing, we find that these applications have bugs that prevent them from running flawlessly.
The most important aspect of a supported Silver application is that CodeWeavers makes a firm commitment to bring all Silver applications to the Gold level in future releases of CrossOver. Likewise, CodeWeavers will respond to and address all bugs reported in these applications.
Gold Medal (Officially Supported)
The Gold rank is awarded to applications that install and run as you would expect them to in Microsoft Windows. We expect that our customers can use these applications on an everyday basis with good results, and only minor bugs.
The further aspect of a supported gold applications is that CodeWeavers will respond to and address all bugs reported in a Gold application, either immediately, or in a future release.