Yesterday, I gave CalendarX a
run-through and exchanged a few emails with +lupa+, the author. Right
now, what I’m thinking of is using CalendarX as the sitewide calendar
because it allows for filtering of events by keyword (concerts, jam
sessions, festivals, workshops, etc.) and then use Calendaring for the
individual artist and band calendars, since they don’t necessarily need
the filtering features, but the iCal integration is very important.

I’m not too keen on having to support two calendar solutions, but since
only the site administrator needs to know CalendarX, it shouldn’t be
too bad. The event objects are persistent so even if another better
calendar solution comes along, or these three merge, the objects will
still be accessible.