Well, I guess I feel similarly to JWZ when it comes to calendar software. Yesterday I downloaded the Lightning 0.1 extension for Thunderbird. It's a partial improvement over running Sunbird; it's handy to be able to view the calendar right there in thunderbird, but it clearly needs a lot more polish before it can be really used.
I was all set to switch over to Lightning from Thunderbird, but then I read JWZ's entry that mentioned Google Calendar at the bottom, and it looks good.
The major points that appeal to me:
So, I think I'll be using google calendar to manage my calendar. I still need to be able to see the private OmniTI calendars, so I'm still using Thunderbird/Lightning to do that.