So the time has finally come; NUDC's inability to sync with my iPhone has forced me to move. And I've moved to Now X.

Am I nuts? Is this an awful idea? I've been using NUD, and then NUDC, since 1992; my entire life is in there. Is there anything I should be aware of? I'm using Snow Leopard. Is Now X going to break when I move to Mountain Lion? Should I just forget it and buy BusyCal and limp along with Address Book (yuk)?

Most importantly, is there anyone who still knows anything about this product hanging around in case I run into trouble?