Although there are no numbers here, these are in order of most favorite to least favorite.
The Favorites
Village
Probably my favorite map at this point. Although there is a horrible choke point, it often leads to exciting battles. I like the brightness of the map and the different paths that are available to get around. All game modes seem fun on this one.
Outpost
The only snow map in Modern Warfare 3, it is very reminiscent of Sub Base from Modern Warfare 2, which was also one of my favorites. Although the falling snow creates a haze at long distances this map has a couple of great spots and is spread out enough that it’s fun. There are some sniper spots, but they aren’t as one sided as other maps.
Fallen
Another bright outdoor map. This one has a couple of tailor-made sniper spots, but after you learn to avoid those areas it’s a lot of fun. Great map for taking out UAVs. because of the clear, blue sky. Some places, the wall color makes it very hard to see people, so the Marksman perk) is very useful here.
Dome
Chris’s favorite map, but just 4th on my list. While the games are fast and intense, lives end so fast that it’s just not my cup of tea all the time. Also, the point streaks tend to pile up on this map and that doesn’t always make things better.
The Next Best
Bakaara
One of the few large, spread out maps in the game, and right out of the movie Black Hawk Down. Definitely a few sniper spots, but spread out enough that it’s hard to stay in one place for too long. Another map where Marksmen is huge.
Resistance
I hated this map the first few times I have played it, but it has really grown on me as I have learned the places people frequent and where to go and not go. Like the pipe on Hardhat, people seem to love the house in the middle of the map, despite the fact that there is only one way in and out.
Downturn
Probably my favorite map the first couple of weeks, but it has grown stale on me. Because of all the concrete rubble, it is often very difficult to make out other players because the uniforms are gray. This leads to a lot of surprise encounters.
Hardhat
Very similar to Modern Warfare 2′s Quarry, this one is a the construction site of an unfinished building. There is a concrete pipe that people congregate in for some reason, despite the fact that once you get in, it’s difficult to get out. This map has it’s moments, as long as you stay out of the pipe.
Interchange
Another gray concrete map that is all spread out and has occasional snipers. Sometimes probably too spread out and too much time running around. Also impossible to shoot down UAVs because of a hazy sky.
The Disliked
Underground
The London subway map seemed cool for a while but has more annoyances than fun spots. All the maps I like have something in common, a place I like to frequent. This map doesn’t have that.
Lockdown
Although the middle bridge in Lockdown is tons of fun, especially with a partner and a riot shield, the map overall has lots of stupidness, including windows where snipers frequent just waiting for players to run by.
Mission
A couple of weeks ago I would have put this map at the bottom, but it has grown on my some. Like most maps, if the worst spots are avoided it can actually be fun. The one side where sniping takes place is the place to avoid, but the middle alley is a fun spot.
The Avoid At All Costs
Seatown
At one point my least favorite map, I don’t dislike it as much as the ones below but it is still one I will avoid whenever I can. There are no good spots and way too many elevated positions that make it a pain. Lots of camping from the elevated spots on this one.
Carbon
Another map with far too many elevated positions and because of the colors and darkness to this map it’s often hard to see players that are further away.
Arkaden
A horrible maps with horrible hiding places and choke points and absolutely nothing good about it.
Bootleg
There is nothing good about this map either. It’s a decent map to go riot shield on for Domination but as with many maps people tend to congregate in bad spots and when they don’t they like to snipe from the corners.