Personally I love France for expanding to 3 to 5 cities very fast, especially when there is wine or incest around.
Hey I know the French are loose, but that loose?
I actually don't get all the love about Siam. Sure you can get free Wats, but that requires you to build libraries, monuments AND temples. That's a lot of strain on the economy, and thus a bit of the non-bo with the UA.