I just got Ticket to Ride map pack 2 with the India and Switzerland boards. I think after I get Heart of Africa I'm going to have to start importing the UK reprints of any of the other games. Each one has enough changes to add a bit of variety and keep it fresh bringing one of them out on game nights. I have heard the India map raises the competition level between players more that the other games. Have you played beyond any of the base games? Which is your favorite?