Pros:
Fully offline data set.
Includes the CIA World Factbook.
Vector graphics are crisp.
Cons:
Roads are all shown as identical-looking lines. I only saw names on US interstates.
Slooooooooooow. Even on a 4S. You wont believe how slow it is.
Weird font.
Maps dont show topography nearly as well as NatGeo.
Not worth $3 as it is now. Save your money.
AdamHaun about The World HD+