Once you get the hang of specialising and connecting cities across regions, this can be pretty good, and theres plenty of additional content out there to add in for free. If the price is right, then Id suggest it as one to have in your library.
The Tropico games are also good, but play in a different fashion.
are you going to accept that invite?
it's been there for three weeks and 99% of the stuff I want to tell you would get me banned if I posted them in forum. :P