I’m starting to warm to Fantastical. I hovered over the subscribe button today. I still find it expensive though, but clearly there are features in the app that Fantastical are paying for on a monthly basis as noted by John Gruber.
Among my favorite new features: complete feature-parity between platforms (previously, the Mac could do more than the iOS versions); integrated weather from a great source, AccuWeather (which is, needless to say, not a free service for Flexibits to offer); calendar sets with iCloud syncing; “interesting calendars” from SchedJoules like team schedules for your favorite sports (also not a free service for Flexibits); and full task support integrating with Apple Reminders, Todoist, and Google Tasks.
Today I downloaded Calendars 366 from the App Store. It shares a lot of the same features that Fantastical as, but as good as the interface is on Calendars 366, it doesn’t carry the same polish that Fantastical has.