After switching from FTMM2 to MacFamilytree a week ago, here is a small summary of my impression:
Pros: Superb interface, good charts & reports, free online research on familysearch.org (no monthly cost), real Mac app feeling, free web site hosting, icloud sync to other macs and iphones (click one checkbox and your tree is on all your devices!)
Cons: Familysearch access from within Mac Familytree is slow sometimes (they promised to fix it in the next weeks with an update, got a swift response from the support team), documentation is OK but not great
Overall, this is the best genealogy app on Mac or Windows I have used so far, the german based company "synium" has done a real great job.