I moved over to the Mac in Feb 2009 from the dreaded Windows based PC. On my computers until the Mac, I've used 5 or six different programs for keeping my family records up-to-date all of which seemed that they would be better than the last, but never so.
MacFamily Tree knocks the socks off all of them. Easy to use, intuitive, easy to create trees etc, well thought out and so easy to correct any mistakes you've made.
5 stars and recommend it to anyone - even first-timers