-de_dust2
What I like: Good for all forms of combat and gives a balanced advantage for both T and CT.
What I Don't Like: Long A is hard to conquer if you barley have anyone rushing towards there.
-de_dust
What I Like: A very simplistic map. Not hard to read once you start playing it
What I Don't Like: The map design, while simplistic, has a very odd like design and, IMO, it gives the advantage to the CT's.
-cs_office
What I Like: Arguably the most balanced map in the game. If a team works together, it can be a pretty hectic match.
What I Don't Like: Some of the spots in the map where people camp near the back garage.
-highschool
What I Like: A very well made map and is also a contender when it comes to being a balanced map. It also isn't that hard to get into mind once you start playing it.
What I Don't Like: Like another user mentioned, there is a little too much camping in the map, so it kind of ruins the hectic matches you can get on other maps.