I love map 2, with 4 a close second. I didn't like 4 much when I first played it yesterday, but it's starting to grow on me. I love how there are so many traps scattered around the map! I've gotten a few kills already with the traps. Still, 2 reigns supreme in my opinion. The tall buildings and ruined city landscape give the map a certain feel I don't get from any other map.