I've played UFO Defense for quite some time, and I find placing my first base in the north of Saudi Arabia to be one of the best starting locations; A hyperwave decoder at this point offers a detection radius that intersects three continents at once, allowing Xcom to more easily locate and engage the aliens early in the game.
Now that I've moved on to TFTD, things aren't so simple. The ocean is a big place, and the zones are not as they appear on the geoscape. (They are box-like and only vaugely match the outline of the continents.)
What I'd like to know is if anyone knows of any good starting points -- espically for superhuman difficulty.