Last year Quilt-Pro Systems brought out a major upgrade of Quilt-Pro for Windows (version 6). The current version for the Mac is still 5. They told me that Quilt-Pro Version 6 for Macs is under development and will be introduced some time this year, but they would not give me any time frame for it.
While they do have reduced prices on their upgrades, if you are not in a hurry and are "pinching pennies", then you may wait to for the release of the new version.