Well, it's pretty much like the others. Fun, but nothing new yet (haven't owned a town). Going to 3D was a waste; if anything it makes some of the map icons harder to recognize.
Interesting side note. Turning on Normal detail quality with AA and AF caused my monitor to enter power save mode. Well, presumeably it terminated the signal out from my graphics card, but the effect was pretty freakish. It also disabled my USB keyboard. I had to get a PS2 one out, reboot, and reenable the USB. However, without AF, it seems to be running just fine. There's no actual use for AA or AF in the game; I just felt like experimenting, having never used either one before in any game.