[CalendarServer-users] Recommended version?

Hi! I'd like to run CalendarServer for personal usage. The host system would be Ubuntu 12.04. I'm comfortable with Python and Twisted programming, and if I come across any bug, I'd be happy to contribute back. Which version do you think would be better for me to try: * tags/release/CalendarServer-4.1 * tags/release/CalendarServer-3.3 * branches/release/CalendarServer-4.1.1-dev * trunk Thanks, Carlos