I've had a great track record with various Linux distros until I used the RHEL IBM edition. I've been plagued with problems and crashes on it. Don't know if they distributing a special OSX IBM edition or not.
Yeah, skip the RHEL version unless things have changed. I recall a very old kernel, terrible driver support and ancient Gnome desktop. However, using the extra-non-supported IBM Fedora builds worked really well and the packages for the IBM apps worked very well. Lotus Notes was actually usable on Linux. THat said, I still needed to use VMware/Windows for Visio and the proprietary Word templates that GTS uses.
Really
The right amount of money to pay this company for their software is ZERO